From 7e7cb03ef4ec554d25c374ff125c717941286605 Mon Sep 17 00:00:00 2001
From: James Hallam <james.hallam93@gmail.com>
Date: Sun, 10 Dec 2023 10:36:09 +0000
Subject: [PATCH] Day 1-10

---
 1/.python-version |    1 +
 1/1-1.py          |   25 ++
 1/1-2.py          |   78 ++++
 1/1-test.txt      |    7 +
 1/1.txt           | 1000 +++++++++++++++++++++++++++++++++++++++++++++
 10/10-1.py        |   56 +++
 10/10-2.py        |   78 ++++
 10/10-test.txt    |    5 +
 10/10.txt         |  140 +++++++
 2/2-1.py          |   45 ++
 2/2-2.py          |   45 ++
 2/2-test.txt      |    5 +
 2/2.txt           |  100 +++++
 3/.python-version |    1 +
 3/3-1.py          |   92 +++++
 3/3-2.py          |   96 +++++
 3/3-test.txt      |   10 +
 3/3.txt           |  140 +++++++
 4/4-1.py          |   37 ++
 4/4-2.py          |   55 +++
 4/4-test.txt      |    6 +
 4/4.txt           |  201 +++++++++
 5/5-1.py          |   68 +++
 5/5-2.py          |  119 ++++++
 5/5-test.txt      |   33 ++
 5/5.txt           |  197 +++++++++
 6/6-1.py          |   29 ++
 6/6-2.py          |   24 ++
 6/6.txt           |    2 +
 7/7-1.py          |   99 +++++
 7/7-2.py          |  144 +++++++
 7/7-test.txt      |    5 +
 7/7.txt           | 1000 +++++++++++++++++++++++++++++++++++++++++++++
 8/8-1.py          |   41 ++
 8/8-2.py          |   64 +++
 8/8-test.txt      |    9 +
 8/8.txt           |  704 +++++++++++++++++++++++++++++++
 9/9-1.py          |   58 +++
 9/9-2.py          |   58 +++
 9/9-test.txt      |    3 +
 9/9.txt           |  200 +++++++++
 41 files changed, 5080 insertions(+)
 create mode 100644 1/.python-version
 create mode 100644 1/1-1.py
 create mode 100644 1/1-2.py
 create mode 100644 1/1-test.txt
 create mode 100644 1/1.txt
 create mode 100644 10/10-1.py
 create mode 100644 10/10-2.py
 create mode 100644 10/10-test.txt
 create mode 100644 10/10.txt
 create mode 100644 2/2-1.py
 create mode 100644 2/2-2.py
 create mode 100644 2/2-test.txt
 create mode 100644 2/2.txt
 create mode 100644 3/.python-version
 create mode 100644 3/3-1.py
 create mode 100644 3/3-2.py
 create mode 100644 3/3-test.txt
 create mode 100644 3/3.txt
 create mode 100644 4/4-1.py
 create mode 100644 4/4-2.py
 create mode 100644 4/4-test.txt
 create mode 100644 4/4.txt
 create mode 100644 5/5-1.py
 create mode 100644 5/5-2.py
 create mode 100644 5/5-test.txt
 create mode 100644 5/5.txt
 create mode 100644 6/6-1.py
 create mode 100644 6/6-2.py
 create mode 100644 6/6.txt
 create mode 100644 7/7-1.py
 create mode 100644 7/7-2.py
 create mode 100644 7/7-test.txt
 create mode 100644 7/7.txt
 create mode 100644 8/8-1.py
 create mode 100644 8/8-2.py
 create mode 100644 8/8-test.txt
 create mode 100644 8/8.txt
 create mode 100644 9/9-1.py
 create mode 100644 9/9-2.py
 create mode 100644 9/9-test.txt
 create mode 100644 9/9.txt

diff --git a/1/.python-version b/1/.python-version
new file mode 100644
index 0000000..11aaa06
--- /dev/null
+++ b/1/.python-version
@@ -0,0 +1 @@
+3.9.5
diff --git a/1/1-1.py b/1/1-1.py
new file mode 100644
index 0000000..edad076
--- /dev/null
+++ b/1/1-1.py
@@ -0,0 +1,25 @@
+import re
+
+
+def get_alpha_regex():
+    return re.compile("[a-zA-Z]")
+
+
+def get_input():
+    regex = get_alpha_regex()
+    with open("one.txt", "r") as f:
+        return [regex.sub("", l) for l in f.read().splitlines()]
+
+
+def get_first_and_last(string):
+    return int(string[0] + string[-1])
+
+
+def main():
+    input = get_input()
+    print(sum(get_first_and_last(i) for i in input))
+
+
+main()
+
+# 57346
diff --git a/1/1-2.py b/1/1-2.py
new file mode 100644
index 0000000..d440cc2
--- /dev/null
+++ b/1/1-2.py
@@ -0,0 +1,78 @@
+import re
+
+NUMS = {
+    "one": 1,
+    "two": 2,
+    "three": 3,
+    "four": 4,
+    "five": 5,
+    "six": 6,
+    "seven": 7,
+    "eight": 8,
+    "nine": 9,
+}
+
+
+def get_alpha_regex():
+    return re.compile("[a-zA-Z]")
+
+
+def get_input():
+    with open("one.txt", "r") as f:
+        return f.read().splitlines()
+
+
+def sub_nums(input_list):
+    inp = []
+    regex = get_alpha_regex()
+    for i in input_list:
+        i = replace_first_and_last(i)
+        i = regex.sub("", i)
+        inp.append(i)
+    return inp
+
+
+def get_first_or_last(positions, pos):
+    func = max if pos == "last" else min
+    pos = func(positions.keys())
+    return pos, positions[pos]
+
+
+def replace_(string, pos, num):
+    string = list(string)
+    string[pos] = str(num)
+    string = "".join(string)
+    return string
+
+
+def replace_first_and_last(string):
+    num_string_positions = {
+        string.find(i): i for i in NUMS.keys() if string.find(i) != -1
+    }
+    r_num_string_positions = {
+        string.rfind(i): i for i in NUMS.keys() if string.rfind(i) != -1
+    }
+    if not num_string_positions or not r_num_string_positions:
+        return string
+
+    first_pos, first_num = get_first_or_last(num_string_positions, "first")
+    last_pos, last_num = get_first_or_last(r_num_string_positions, "last")
+    string = replace_(string, first_pos, NUMS[first_num])
+    string = replace_(string, last_pos, NUMS[last_num])
+
+    return string
+
+
+def get_first_and_last(string):
+    return int(string[0] + string[-1])
+
+
+def main():
+    input = get_input()
+    input_list = sub_nums(input)
+    print(sum(get_first_and_last(i) for i in input_list))
+
+
+main()
+
+# 57345
diff --git a/1/1-test.txt b/1/1-test.txt
new file mode 100644
index 0000000..4316a6b
--- /dev/null
+++ b/1/1-test.txt
@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen
\ No newline at end of file
diff --git a/1/1.txt b/1/1.txt
new file mode 100644
index 0000000..f7f14b0
--- /dev/null
+++ b/1/1.txt
@@ -0,0 +1,1000 @@
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diff --git a/10/10-1.py b/10/10-1.py
new file mode 100644
index 0000000..7c33663
--- /dev/null
+++ b/10/10-1.py
@@ -0,0 +1,56 @@
+DIRECTION_MAP = {
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+    "-": [[0, 1], [0, -1]],
+    "J": [[-1, 0], [0, -1]],
+    "L": [[-1, 0], [0, 1]],
+    "7": [[1, 0], [0, -1]],
+    "F": [[1, 0], [0, 1]],
+    "S": [[-1, 0], [0, 1]],
+}
+
+
+def get_input():
+    with open("10.txt", "r") as f:
+        return [l.strip() for l in f.readlines()]
+
+
+def find_start(input):
+    for i, l in enumerate(input):
+        for j, c in enumerate(l):
+            if c == "S":
+                return [i, j]
+
+
+def get_next(input, current_coords, prev_coords):
+    y, x = current_coords
+    current_val = input[y][x]
+    possibles = DIRECTION_MAP[current_val]
+    for pos in possibles:
+        next_coords = [y + pos[0], x + pos[1]]
+        if next_coords == prev_coords:
+            continue
+        return input[next_coords[0]][next_coords[1]], next_coords
+
+
+def get_furthest(input):
+    start = find_start(input)
+    count = 0
+    prev = start
+    current_coords = start
+    while True:
+        count += 1
+        next_val, next_coords = get_next(input, current_coords, prev)
+        if next_val == "S":
+            return count / 2
+        prev = current_coords
+        current_coords = next_coords
+
+
+def main():
+    input = get_input()
+    print(get_furthest(input))
+
+
+main()
+
+# 6875
diff --git a/10/10-2.py b/10/10-2.py
new file mode 100644
index 0000000..e261159
--- /dev/null
+++ b/10/10-2.py
@@ -0,0 +1,78 @@
+from shapely.geometry import Point, Polygon
+
+
+DIRECTION_MAP = {
+    "|": [[1, 0], [-1, 0]],
+    "-": [[0, 1], [0, -1]],
+    "J": [[-1, 0], [0, -1]],
+    "L": [[-1, 0], [0, 1]],
+    "7": [[1, 0], [0, -1]],
+    "F": [[1, 0], [0, 1]],
+    "S": [[-1, 0], [0, 1]],
+    "O": [[-1, 0], [0, 1]],
+}
+
+
+def get_input():
+    with open("10.txt", "r") as f:
+        return [list(l.strip()) for l in f.readlines()]
+
+
+def find_start(input):
+    for i, l in enumerate(input):
+        for j, c in enumerate(l):
+            if c == "S":
+                return [i, j]
+
+
+def mark_loop(input, current_coords, prev_coords):
+    y, x = current_coords
+    current_val = input[y][x]
+    possible_coords = DIRECTION_MAP[current_val]
+    input[y][x] = "O"
+    for p in possible_coords:
+        next_coords = [y + p[0], x + p[1]]
+        if next_coords == prev_coords:
+            continue
+        return input[next_coords[0]][next_coords[1]], next_coords
+
+
+def plot_loop(input):
+    start = find_start(input)
+    count = 0
+    prev_coords = start
+    all_coords = []
+    current_coords = start
+    while True:
+        count += 1
+        next_val, next_coords = mark_loop(input, current_coords, prev_coords)
+        if next_val == "O":
+            break
+        prev_coords = current_coords
+        current_coords = next_coords
+        all_coords.append(tuple(current_coords))
+    return all_coords
+
+
+def count_within(input, poly):
+    count = 0
+    for i, row in enumerate(input):
+        for j, l in enumerate(row):
+            if l == "O":
+                continue
+            if poly.contains(Point(i, j)):
+                count += 1
+    return count
+
+
+def main():
+    input = get_input()
+    all_coords = plot_loop(input)
+    poly = Polygon(all_coords)
+
+    print(count_within(input, poly))
+
+
+main()
+
+# 471
diff --git a/10/10-test.txt b/10/10-test.txt
new file mode 100644
index 0000000..1ddc980
--- /dev/null
+++ b/10/10-test.txt
@@ -0,0 +1,5 @@
+7-F7-
+.FJ|7
+SJLL7
+|F--J
+LJ.LJ
\ No newline at end of file
diff --git a/10/10.txt b/10/10.txt
new file mode 100644
index 0000000..b7c7066
--- /dev/null
+++ b/10/10.txt
@@ -0,0 +1,140 @@
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+|-F-J.F7J-|7|--J7JJJLF--JLJFJLJ|||||FJF-JL--7LJ||||L7|L-7FJ||L7FJFJ|L-7.|LJLJ|L7L7FJFJL7||||L7FJ|L7|LJ|||L7LJ||LLJLJ|L---7LJ7-JJJFF-|JJ|FFJ|
+|.77L-J|-FJF77LLJFF.LL-7F-7L7JFJ|||LJFJF7F-7|F7|L7|FJ|F7|L7||FJL7L7L7FJFJF--7L-JFJ|FJF7LJLJ|FJL7L7|L7FJ||FJF-JL----7L7F7FJJJ|.L|7L..|||.||L7
+||L7-|LLLL7LL|7||F|F|.LLJFJFJFJFJLJF-JFJ|L7||||L7|||FJ|LJFJ|LJF-JFJ7LJ.L7|F7L7F7L7||FJL----JL7FJFJ|FJL7|LJ7L--7F7F7|FJ|LJJJFL|.||.FF-JL-7J-7
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+.F-LF..F7J7|7|FLJ-FJ-7L-7L-J|||F-JFJFJL7F--JF7F7L7LJFLJLJL||J|-F7F7.||FJ|FJFJ||LLJ||F--J|F-J|FJF7F7||LJF7|-FFL7L-7.-|7|F|7L7FF||7JFJ7F|J7.|F
+-7-.LLF7J.F-.FJ-J|J-LJ.LL--7||||F7L7|F7|L--7|LJL7|JLJ.LF--J|-|FJLJL-J||FJL7L7|L-7JLJL-7FJ|F-J|FJ|||L---J|7J|L-L--J7|LFJ-J|.L-F7J..LJFLJ77.-J
+J|.L.JLLFF.LL7.|.-77LF7JLLLLJ|||||FJ|||L7F-JL--7LJ7.L77|F7FJ.LL7F7F7FJ|L7JL7||F-JL|JF-JL7LJJFJ|J|||F7F7FJJL-|FJ|LLLL-7J||F-L7.L|F7LLFLLJ7L.|
+.-J77J||.|77.|7||LJ-.JJ7.F||7LJ||||F||L-JL7F---JJ.J7J-L||LJJFL|LJLJ|L7|FJ|FJLJL---7FL--7|J.LL7|JLJLJ||||7.77||-JJFJJ-L||F7JF|7F7F|.FF7|.|JJJ
+.||F|L-JFLF--L7--.|.|J|.F-7JJ|LLJLJFJ|F7.FJL---7J-|LJJ|LJFJLF-LJJ|LL-J||F7L7F7F7F-J7LJFLJ.|.|LJ7J-J.||LJJ7.F-.7|.LL.|F-.L-.|.|LF|JF|||F-|J7.
+LF--J-JF7-|.F-JFL-L|J.F77.LJ.J.FJ.FL7||L-JF7F7FJ7..|.L||LJ7.|J||LJLL|J|||L-J||||||L77L7F|.F-7.JJFF|FLJ.|J-FJ7|-LJ-F-7JF7..LJ.-7|L7LFLL7J|L|.
+|LFJ-LLF|F|JJ.FLJLL-7.LF|F|.||-J7LF-J|L--7|LJLJ.|7..-F--7LL-|-FL-JFJ||LJ|F7FJ||LJ--LL---7||L.J.7-L7||JLJ.L7.FLJL77FLJLFL7-L-.L|7-|L77-|-|.|7
+7.|J7|.L|LJF77F7L-J|7.L7|F|--|7L|LL--J|F-JL--7JF|----|J.FJ|FF-J|F-|-7FLJLJ|L7LJ7-J||F-7.-7-|7||L7FLLL7|JF-J-J..F|7|LFJ.|L-F---.7L|||L-|.LL-7
+F-L7LF7.|FFJ|L.FJL7LJ-7J--F77L7F||L|J--L7F7F-J7|||-LJ.FLJ-F|.FFJL7.FLF7JJFL-JL|F77F77-FJ||.FJ-.F-|7LLLJ.FJ|.-7-F|-F-|JF77F-7|L|J--LJJ-|F|L-L
+L|JL7F-L-7J7|..L7LFFJJJL7LF77L7JLJ-.L-LFJ||L--7F-L7.F|FL.-LJ--.J7L.J--J7LF-JJF-7J7F777J.F7FL7.F-7L-7.|77L-F|F--7J.J-7-L--||L-.L-JLJJ..L-L--|
+|..LL-7J.-.LLF.L|.FJJ...J..L7.LJJLJLJ.LL-JL---J-J..F-L7LFJJJ-|.LJLJJLLLJLLJJLLJLLL-L--J.L|J---|L|JJL7LLL-7-J-|-|J.L-J.J.J.LJ-7J.LL7J..LLJJJ.
\ No newline at end of file
diff --git a/2/2-1.py b/2/2-1.py
new file mode 100644
index 0000000..c64de95
--- /dev/null
+++ b/2/2-1.py
@@ -0,0 +1,45 @@
+CUBES = {"red": 12, "green": 13, "blue": 14}
+
+
+def get_input():
+    with open("two.txt", "r") as f:
+        return [
+            l.replace("Game", "").replace("\n", "").split(":") for l in f.readlines()
+        ]
+
+
+def get_game_dict(games):
+    game_dict = {}
+    for g in games:
+        game_dict[g[0]] = g[1].split(";")
+    return game_dict
+
+
+def strip_impossible_games(game_dict):
+    for num, sets in game_dict.items():
+        for set in sets:
+            cubes = set.split(",")
+            for cube in cubes:
+                quant, color = cube.strip().split(" ")
+                if CUBES[color] < int(quant) and game_dict.get(num):
+                    game_dict[num] = None
+    return game_dict
+
+
+def get_score(game_dict):
+    score = 0
+    for num, sets in game_dict.items():
+        if sets:
+            score += int(num)
+    return score
+
+
+def main():
+    input = get_input()
+    game_dict = get_game_dict(input)
+    game_dict = strip_impossible_games(game_dict)
+    score = get_score(game_dict)
+    print(score)
+
+
+main()
diff --git a/2/2-2.py b/2/2-2.py
new file mode 100644
index 0000000..8a12649
--- /dev/null
+++ b/2/2-2.py
@@ -0,0 +1,45 @@
+def get_input():
+    with open("two.txt", "r") as f:
+        return [
+            l.replace("Game", "").replace("\n", "").split(":") for l in f.readlines()
+        ]
+
+
+def get_game_dict(games):
+    game_dict = {}
+    for g in games:
+        game_dict[g[0]] = g[1].split(";")
+    return game_dict
+
+
+def get_game_totals(games):
+    game_dict = {}
+    for num, sets in games.items():
+        game_dict[num] = {}
+        for set in sets:
+            cubes = set.split(",")
+            for cube in cubes:
+                quant, color = cube.strip().split(" ")
+                if int(quant) > game_dict[num].get(color, 0):
+                    game_dict[num][color] = int(quant)
+    return game_dict
+
+
+def get_total_score(game_dict):
+    score = 0
+    for _, quants in game_dict.items():
+        prod = 1
+        for quant in quants.values():
+            prod *= quant
+        score += prod
+    return score
+
+
+def main():
+    input = get_input()
+    game_dict = get_game_dict(input)
+    game_dict = get_game_totals(game_dict)
+    print(get_total_score(game_dict))
+
+
+main()
diff --git a/2/2-test.txt b/2/2-test.txt
new file mode 100644
index 0000000..1cd7d33
--- /dev/null
+++ b/2/2-test.txt
@@ -0,0 +1,5 @@
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
\ No newline at end of file
diff --git a/2/2.txt b/2/2.txt
new file mode 100644
index 0000000..3e16549
--- /dev/null
+++ b/2/2.txt
@@ -0,0 +1,100 @@
+Game 1: 18 red, 8 green, 7 blue; 15 red, 4 blue, 1 green; 2 green, 17 red, 6 blue; 5 green, 1 blue, 11 red; 18 red, 1 green, 14 blue; 8 blue
+Game 2: 16 blue, 12 green, 3 red; 13 blue, 2 red, 8 green; 15 green, 3 red, 16 blue
+Game 3: 6 green, 15 red; 1 green, 4 red, 7 blue; 9 blue, 7 red, 8 green
+Game 4: 8 red, 2 blue; 11 red, 5 blue, 1 green; 12 red, 1 green, 5 blue; 1 blue; 2 blue, 9 red
+Game 5: 9 blue, 3 red, 12 green; 3 green, 4 red, 17 blue; 15 blue, 2 green, 5 red; 3 blue, 5 green, 6 red; 6 red, 4 blue, 7 green; 3 green, 10 blue
+Game 6: 11 red, 2 blue, 6 green; 2 blue, 9 red, 4 green; 3 blue, 12 red, 8 green; 5 red, 11 green, 4 blue; 2 blue, 9 red, 13 green; 15 red, 3 blue, 7 green
+Game 7: 2 red, 9 green, 12 blue; 14 blue, 1 green, 6 red; 7 blue, 9 green; 9 green, 8 red, 4 blue; 5 red, 3 green, 16 blue; 4 red, 8 green
+Game 8: 11 red, 12 green, 1 blue; 4 red, 7 green; 11 red, 6 green; 17 green; 15 green, 1 red
+Game 9: 1 red, 1 green, 12 blue; 3 green, 12 red, 6 blue; 14 red, 1 blue; 9 blue, 1 red, 3 green
+Game 10: 1 red, 4 blue; 3 blue, 4 green; 3 green, 3 red, 8 blue; 2 blue, 3 red; 3 green, 4 red, 3 blue
+Game 11: 8 blue, 1 red; 8 green, 1 red, 1 blue; 13 green, 9 red, 6 blue
+Game 12: 2 red, 2 blue, 1 green; 3 red, 1 green; 1 blue, 3 green
+Game 13: 12 green, 4 blue; 2 red, 2 blue, 8 green; 6 green, 3 red; 3 red, 5 green; 9 green, 7 blue, 1 red
+Game 14: 1 red, 7 green; 5 green, 12 red, 10 blue; 9 red, 11 blue, 7 green; 7 blue, 3 red, 9 green
+Game 15: 7 green, 1 blue; 1 red, 2 green, 1 blue; 7 green
+Game 16: 1 green, 1 blue; 2 blue, 4 green, 2 red; 2 green, 2 blue
+Game 17: 6 red, 11 green, 7 blue; 1 blue, 13 green, 4 red; 4 green, 6 blue, 7 red
+Game 18: 2 red, 8 blue; 7 red, 11 blue; 1 green, 16 blue, 7 red; 18 blue, 1 green, 14 red
+Game 19: 2 red, 2 blue; 1 green, 6 red; 1 green, 3 red, 2 blue
+Game 20: 6 red, 2 blue, 5 green; 4 red, 1 blue, 9 green; 3 blue, 2 red, 9 green; 8 red, 12 green, 5 blue
+Game 21: 6 red, 7 blue; 3 blue, 16 red, 2 green; 2 blue, 13 red; 3 blue, 11 red, 3 green; 1 green, 18 red, 6 blue; 12 red, 5 blue, 2 green
+Game 22: 9 red, 6 blue, 14 green; 1 blue, 5 green, 13 red; 6 red; 18 red, 4 green; 2 blue, 10 green, 16 red; 1 red, 18 green, 1 blue
+Game 23: 6 green, 4 red, 3 blue; 1 blue, 2 red, 9 green; 5 green, 1 red, 3 blue; 5 blue, 4 red, 4 green
+Game 24: 1 red, 5 green, 2 blue; 4 red, 7 green, 9 blue; 9 blue, 7 green; 7 green, 13 blue; 4 blue, 1 green, 4 red
+Game 25: 13 blue, 10 red, 11 green; 10 green, 1 blue, 3 red; 15 red, 5 green, 8 blue; 19 red, 10 green, 13 blue; 12 blue, 4 green, 16 red; 7 red, 5 green, 9 blue
+Game 26: 20 red, 6 blue, 12 green; 15 blue, 17 red, 9 green; 19 red, 6 green, 3 blue; 8 green, 1 red, 15 blue; 10 green, 8 red, 5 blue; 4 green, 20 red, 18 blue
+Game 27: 2 blue, 3 green, 7 red; 2 blue, 4 red; 5 blue, 5 green; 8 blue, 6 green, 2 red
+Game 28: 1 green, 6 red; 3 red, 3 blue; 1 green, 4 red; 1 red, 2 blue; 2 red
+Game 29: 8 blue, 1 green; 7 blue, 1 red; 6 red, 2 blue; 2 red, 3 green; 3 red, 6 green, 5 blue
+Game 30: 11 blue, 17 green, 10 red; 9 blue, 12 green, 14 red; 16 green, 2 red, 8 blue; 18 green, 1 red, 1 blue; 5 blue, 7 red, 18 green; 9 green, 3 blue, 11 red
+Game 31: 5 blue, 13 green; 2 green, 3 red, 4 blue; 3 red, 15 green, 2 blue; 5 blue, 19 green; 5 blue, 18 green; 3 green, 7 blue, 3 red
+Game 32: 12 red, 2 green, 3 blue; 2 green, 16 red, 1 blue; 13 red, 4 green, 6 blue
+Game 33: 18 green, 8 blue, 3 red; 15 green, 2 blue, 4 red; 14 blue, 3 red, 6 green; 20 green, 13 blue; 1 red, 19 green
+Game 34: 1 green, 7 blue, 2 red; 8 green, 10 blue, 2 red; 3 blue, 1 green, 1 red; 6 green, 13 blue, 1 red; 1 green, 4 blue, 2 red; 1 red, 5 green, 7 blue
+Game 35: 7 blue, 8 red; 2 blue, 3 red; 4 blue, 3 red; 7 red, 4 blue; 1 blue, 1 green, 3 red
+Game 36: 1 red, 8 green; 1 red, 6 green; 3 green, 8 red; 1 blue, 2 red, 1 green
+Game 37: 3 blue, 13 red; 2 blue, 7 red; 5 red, 1 green; 3 red, 3 blue; 1 blue, 12 red, 1 green; 14 red, 3 blue
+Game 38: 7 blue, 18 red, 12 green; 11 red, 6 green, 1 blue; 9 green, 1 red; 9 green, 13 blue, 16 red
+Game 39: 12 red, 3 green, 2 blue; 3 blue, 3 green, 10 red; 2 blue, 5 red; 2 blue, 1 green; 5 blue, 4 green, 7 red; 2 green, 1 red
+Game 40: 1 red, 7 blue, 5 green; 1 red, 4 blue, 8 green; 3 red, 5 blue, 14 green; 10 green, 2 blue, 1 red; 11 blue, 7 green, 1 red; 14 green, 2 blue
+Game 41: 8 green, 5 red, 3 blue; 5 red, 4 blue, 12 green; 10 green, 6 blue; 13 green, 7 blue; 1 red, 2 green, 15 blue
+Game 42: 17 red, 1 blue, 5 green; 9 green, 16 red; 1 blue, 15 green, 2 red; 1 blue, 12 red, 12 green
+Game 43: 12 green, 5 blue; 3 red, 8 blue, 10 green; 8 blue, 2 green, 1 red
+Game 44: 1 green, 7 red, 2 blue; 1 blue, 10 red; 4 green, 3 blue, 19 red; 1 blue, 3 green, 1 red; 1 blue; 4 red, 2 green, 3 blue
+Game 45: 16 red, 12 blue, 1 green; 13 blue, 16 red, 9 green; 7 green, 3 red, 8 blue
+Game 46: 1 red, 17 green, 6 blue; 6 blue, 1 red, 3 green; 12 green, 1 blue; 4 blue, 2 green
+Game 47: 2 green, 12 red, 15 blue; 9 blue, 2 green, 2 red; 3 green, 6 blue, 2 red; 11 blue, 3 green, 5 red; 6 green, 9 red, 17 blue
+Game 48: 5 blue, 6 red; 7 green, 14 red, 4 blue; 2 green, 5 blue, 2 red; 11 blue, 5 red, 5 green
+Game 49: 7 green, 7 blue, 4 red; 11 green, 12 blue, 2 red; 12 blue, 4 red, 9 green; 3 red, 8 blue, 17 green; 16 green, 3 red, 14 blue
+Game 50: 5 green, 4 red, 10 blue; 7 green, 14 red, 5 blue; 12 red, 18 blue, 14 green
+Game 51: 12 green, 3 blue; 10 green, 4 blue, 2 red; 3 green, 5 blue
+Game 52: 12 green, 6 red, 7 blue; 20 green, 6 red, 18 blue; 1 green, 5 blue, 11 red; 2 green, 15 blue, 6 red
+Game 53: 6 red, 2 green, 5 blue; 13 green, 1 blue, 14 red; 7 green, 1 blue; 3 green, 4 blue, 6 red; 10 red, 6 green, 4 blue
+Game 54: 4 blue, 1 red; 1 red, 1 blue, 9 green; 3 red, 2 blue, 4 green; 3 green, 2 red, 5 blue; 9 blue, 2 red, 7 green
+Game 55: 7 blue; 6 blue, 1 red; 4 red, 7 blue; 3 red, 3 blue, 1 green
+Game 56: 2 green, 7 blue; 3 red, 10 blue; 1 green, 2 red; 3 red, 8 blue, 4 green; 1 green, 11 blue, 3 red; 2 green, 8 blue
+Game 57: 3 red, 1 green; 1 green, 1 red, 1 blue; 1 red, 4 green, 15 blue; 9 blue, 2 red, 1 green
+Game 58: 12 blue, 13 red, 5 green; 2 blue, 6 green; 12 red, 15 green, 7 blue; 5 red, 4 green, 14 blue; 15 red, 2 green, 9 blue
+Game 59: 5 green, 5 blue; 4 red, 6 blue, 2 green; 5 blue, 3 green, 6 red; 3 red, 6 green, 4 blue; 3 blue, 7 green, 10 red
+Game 60: 1 red, 1 blue, 3 green; 1 red; 3 green, 6 blue; 6 blue
+Game 61: 7 green, 1 red, 1 blue; 4 red, 3 green, 1 blue; 7 blue, 7 green; 11 blue, 2 green, 5 red; 5 red, 4 green, 5 blue
+Game 62: 17 green, 2 red, 3 blue; 1 red, 3 blue, 2 green; 1 green, 3 blue, 2 red; 1 red, 17 green; 2 red, 15 green, 4 blue; 5 green
+Game 63: 2 green, 4 red, 3 blue; 9 blue, 10 red; 1 green, 13 blue, 2 red; 2 green, 1 blue, 5 red
+Game 64: 6 red, 8 blue; 3 red, 6 blue, 5 green; 13 red, 11 blue, 8 green; 11 red, 3 blue, 1 green
+Game 65: 4 green, 1 blue, 2 red; 3 blue, 3 green, 11 red; 6 green, 3 blue, 3 red; 5 red, 4 blue; 8 red, 5 blue, 2 green
+Game 66: 10 green, 13 red; 1 blue, 2 red, 4 green; 7 red, 7 green; 19 green, 9 red, 1 blue; 16 green, 16 red, 2 blue; 10 red, 11 green
+Game 67: 3 blue, 4 green, 2 red; 6 blue, 19 red; 4 blue, 2 red, 5 green; 4 green, 5 blue, 1 red
+Game 68: 13 blue, 15 red, 7 green; 5 blue, 20 red; 6 green, 12 blue, 8 red; 5 blue, 8 green
+Game 69: 13 red, 13 green; 13 green, 3 red, 1 blue; 8 green; 9 green, 9 red
+Game 70: 8 blue, 11 red, 2 green; 12 red, 2 blue; 13 red, 6 blue, 3 green; 7 blue, 3 green, 5 red; 15 red, 1 blue, 3 green
+Game 71: 7 red, 9 green; 4 blue, 9 green, 7 red; 4 blue, 2 green; 6 blue, 2 red, 9 green
+Game 72: 14 blue, 1 green; 4 red, 1 green, 9 blue; 6 blue, 8 red, 2 green
+Game 73: 17 green; 10 blue, 2 red, 9 green; 1 green, 10 blue, 2 red; 8 blue, 1 red; 5 blue, 16 green
+Game 74: 12 green, 6 red, 5 blue; 2 red, 4 blue, 10 green; 3 green, 4 blue, 2 red; 8 green, 2 red, 5 blue; 5 red, 2 blue, 2 green; 6 green, 1 red, 1 blue
+Game 75: 4 blue, 19 green; 15 blue, 7 green; 18 blue, 5 green, 7 red; 16 green, 15 blue; 7 red, 4 green, 13 blue; 9 green, 13 blue
+Game 76: 1 red, 2 green, 7 blue; 13 blue, 7 green, 1 red; 13 blue, 5 red
+Game 77: 3 red, 10 blue, 6 green; 1 green, 2 red, 10 blue; 7 green, 1 red
+Game 78: 11 green, 2 blue; 6 blue, 8 red, 5 green; 10 red, 6 green, 4 blue; 6 blue, 3 green, 10 red; 5 green, 6 red
+Game 79: 4 red, 6 blue, 1 green; 1 red; 2 green, 3 blue, 4 red; 4 red, 1 green, 2 blue; 2 green, 1 red
+Game 80: 2 red, 1 green; 1 red, 1 green; 7 red, 1 green; 1 blue, 7 red, 3 green
+Game 81: 1 blue, 15 red, 4 green; 2 green, 12 red; 4 green, 13 red; 1 blue, 3 green, 13 red; 12 red, 2 green, 1 blue; 3 green, 8 red, 1 blue
+Game 82: 18 red, 4 green, 1 blue; 14 red, 1 green, 2 blue; 10 red, 2 blue, 7 green; 13 red; 3 red, 7 green, 1 blue; 5 red, 4 green
+Game 83: 4 red, 10 green, 5 blue; 2 red, 12 blue, 13 green; 19 blue, 9 green, 1 red; 2 red, 14 blue, 3 green; 13 green, 8 blue, 5 red
+Game 84: 12 blue, 7 red, 9 green; 1 blue, 1 green, 14 red; 1 green, 8 red, 11 blue; 11 blue, 12 red, 3 green; 11 blue, 8 green, 13 red; 7 green, 7 red, 10 blue
+Game 85: 10 red, 2 blue; 11 green, 9 red, 4 blue; 3 red, 5 blue, 13 green; 5 red, 5 green; 5 red, 2 blue, 4 green; 11 green, 4 blue, 19 red
+Game 86: 1 blue, 6 green, 2 red; 1 red, 1 blue, 8 green; 3 red, 1 blue, 4 green; 1 green, 4 red; 9 green, 2 red; 6 green, 7 red, 1 blue
+Game 87: 8 green, 8 blue, 4 red; 5 red, 2 blue, 10 green; 3 red, 13 green; 1 red, 3 blue, 4 green
+Game 88: 3 blue, 9 green, 3 red; 2 blue, 15 green; 2 red, 9 green
+Game 89: 9 red, 6 green, 15 blue; 10 blue, 7 red, 2 green; 7 green, 16 blue, 4 red
+Game 90: 1 red, 1 blue, 7 green; 7 green, 1 blue, 8 red; 3 red, 1 blue, 1 green
+Game 91: 1 green, 2 red, 6 blue; 4 green, 4 red, 3 blue; 4 red, 11 green, 4 blue; 3 blue, 5 red; 8 green, 2 red, 8 blue
+Game 92: 2 red, 3 blue; 3 blue, 2 green, 2 red; 9 red, 3 green
+Game 93: 2 blue, 5 green; 2 green, 5 blue, 3 red; 2 green, 5 blue, 1 red; 7 blue, 4 red, 9 green
+Game 94: 1 red, 9 blue, 14 green; 6 green; 2 blue, 11 green; 4 blue, 16 green, 1 red
+Game 95: 10 green, 2 blue, 7 red; 4 blue, 4 red, 6 green; 3 red, 2 blue, 3 green
+Game 96: 12 red; 3 green, 10 red; 6 blue, 14 red, 2 green; 7 green, 15 red; 3 green, 3 red, 1 blue; 5 blue, 1 red
+Game 97: 3 red, 1 green, 1 blue; 1 green, 3 red; 4 red, 1 green
+Game 98: 4 red, 5 green, 6 blue; 2 red, 9 green, 6 blue; 2 blue, 11 red, 14 green; 6 green, 4 blue; 11 blue, 11 red, 8 green
+Game 99: 2 green, 20 blue; 12 blue; 3 red, 12 blue; 7 blue; 3 green, 10 blue, 2 red; 3 red, 2 green
+Game 100: 2 blue, 8 green, 12 red; 2 green, 13 red; 2 red, 4 green; 2 green, 7 red; 10 green, 5 red, 1 blue
\ No newline at end of file
diff --git a/3/.python-version b/3/.python-version
new file mode 100644
index 0000000..0c7d5f5
--- /dev/null
+++ b/3/.python-version
@@ -0,0 +1 @@
+3.11.4
diff --git a/3/3-1.py b/3/3-1.py
new file mode 100644
index 0000000..81aa7b6
--- /dev/null
+++ b/3/3-1.py
@@ -0,0 +1,92 @@
+def get_input():
+    with open("three.txt", "r") as f:
+        return f.readlines()
+
+
+def get_neighbours(coords, lines):
+    y, x = coords
+    neighbours = []
+    if x > 0:
+        neighbours.append([y, x - 1])
+        if y > 0:
+            neighbours.append([y - 1, x - 1])
+    if x < len(lines[y]) - 1:
+        neighbours.append(
+            [
+                y,
+                x + 1,
+            ]
+        )
+        if y < len(lines) - 1:
+            neighbours.append([y + 1, x + 1])
+    if y > 0:
+        neighbours.append([y - 1, x])
+        if x < len(lines[y]) - 1:
+            neighbours.append([y - 1, x + 1])
+    if y < len(lines) - 1:
+        neighbours.append([y + 1, x])
+        if x > 0:
+            neighbours.append([y + 1, x - 1])
+    return neighbours
+
+
+def get_all_neighbours(coord_range, lines):
+    neighbours = []
+    for coords in coord_range:
+        neighbours += get_neighbours(coords, lines)
+    return neighbours
+
+
+def get_full_num(start, lines):
+    y, x = start
+    num = lines[y][x]
+    end = -1
+    # assumes that the number is at most 4 (3?) digits long
+    for i in range(int(x) + 1, int(x) + 4):
+        if i >= len(lines[y]):
+            end = i
+            break
+        if lines[y][i].isdigit():
+            num += lines[y][i]
+        else:
+            end = i
+            break
+    return num, [[y, i] for i in range(x, end)]
+
+
+def is_symbol(chr):
+    return chr in ["+", "-", "*", "/", "#", "&", "$", "@", "=", "%"]
+
+
+def add_component_numbers(lines):
+    nums = []
+    for i in range(len(lines)):
+        # in_last_num prevents double counting of numbers
+        # e.g. 123, 23, 3.
+        in_last_num = []
+        for j in range(len(lines[i])):
+            current = lines[i][j]
+            if current.isdigit():
+                # if this is a continuation of the previous number:
+                if current in in_last_num:
+                    in_last_num.pop(0)
+                    continue
+                # if this is the start of a new number:
+                full_num, coord_range = get_full_num([i, j], lines)
+                # add the new number's digits to in_last_num, minus first digit
+                in_last_num = list(str(full_num))[1:]
+                neighbours = get_all_neighbours(coord_range, lines)
+                for n in neighbours:
+                    if is_symbol(lines[n[0]][n[1]]):
+                        nums.append(int(full_num))
+                        break
+    return nums
+
+
+def main():
+    input = get_input()
+    nums = add_component_numbers(input)
+    print(sum((n for n in nums)))
+
+
+main()
diff --git a/3/3-2.py b/3/3-2.py
new file mode 100644
index 0000000..f293369
--- /dev/null
+++ b/3/3-2.py
@@ -0,0 +1,96 @@
+def get_input():
+    with open("three.txt", "r") as f:
+        return f.readlines()
+
+
+def get_neighbours(coords, lines):
+    y, x = coords
+    neighbours = []
+    if x > 0:
+        neighbours.append([y, x - 1])
+        if y > 0:
+            neighbours.append([y - 1, x - 1])
+    if x < len(lines[y]) - 1:
+        neighbours.append(
+            [
+                y,
+                x + 1,
+            ]
+        )
+        if y < len(lines) - 1:
+            neighbours.append([y + 1, x + 1])
+    if y > 0:
+        neighbours.append([y - 1, x])
+        if x < len(lines[y]) - 1:
+            neighbours.append([y - 1, x + 1])
+    if y < len(lines) - 1:
+        neighbours.append([y + 1, x])
+        if x > 0:
+            neighbours.append([y + 1, x - 1])
+    return neighbours
+
+
+def get_full_num(coord, lines):
+    y, x = coord
+    y, x = int(y), int(x)
+    num = lines[y][x]
+
+    # start at x + 1, go right until you hit a non-digit or end of line
+    for i in range(x + 1, x + 3):
+        if i >= len(lines[y]):
+            break
+        if lines[y][i].isdigit():
+            # append to end of num
+            num += lines[y][i]
+        else:
+            break
+    # start at x-1, go left until you hit a non-digit or start of line
+    for i in range(x - 1, x - 3, -1):
+        if i < 0:
+            break
+        if lines[y][i].isdigit():
+            # add to start of num
+            num = lines[y][i] + num
+        else:
+            break
+    return num
+
+
+def get_num_neighbours(coords, lines):
+    neighbours = get_neighbours(coords, lines)
+    num_neighbours = set()
+    for neighbour in neighbours:
+        y, x = neighbour
+        if lines[y][x].isdigit():
+            # this would be bad if there were two equal numbers around one gear
+            # should really add coord ranges to a list of 'registered_nums'
+            # rather than relying on a set
+            num_neighbours.add(get_full_num(neighbour, lines))
+    return num_neighbours
+
+
+def find_gears(lines):
+    gears = []
+    for y, line in enumerate(lines):
+        for x, chr in enumerate(line):
+            if chr == "*":
+                num_neighbours = get_num_neighbours([y, x], lines)
+                if len(num_neighbours) == 2:
+                    gears.append(num_neighbours)
+    return gears
+
+
+def get_ratios(gears):
+    sum = 0
+    for g in gears:
+        sum += int(g.pop()) * int(g.pop())
+    return sum
+
+
+def main():
+    input = get_input()
+    gears = find_gears(input)
+    print(get_ratios(gears))
+
+
+main()
diff --git a/3/3-test.txt b/3/3-test.txt
new file mode 100644
index 0000000..b20187f
--- /dev/null
+++ b/3/3-test.txt
@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..
diff --git a/3/3.txt b/3/3.txt
new file mode 100644
index 0000000..4c9a7f3
--- /dev/null
+++ b/3/3.txt
@@ -0,0 +1,140 @@
+48.................501....33.....622..............763.........331.................161.683......................................980..........
+...491.842.....948*..................338.....*......=...........-...309.......633*....*....................*990...706...452......*..+.......
+...*...*....................426........*..408.........................*............659...............250.........&.......*.....767...403....
+363.....961...959#.508*223......843.406..........690................%..479.....................398.../....*............458..................
+......=.........................................*....@946........767.........907=.................@....158.850..+670..............10*790....
+.......39.306...679.%113...............665....874....................597...................861.........................840...855............
+.................*.........864.....154*....#..............1*......4..........341..................731*..........783.....#.......*204........
+..919...........706.....*......891........840..%473.........379....*149........-..115..519............668..........*423.....................
+...*.................398.190......$.............................#.......=.%530......$..*..............................................475...
+.543...@.............................834..729.&.........146......789.189........511...17........455*308..662.............530................
+.....142....437....138*755..&53.....*..........783........./.......................*......................................./....674..315....
+..........-./.......................826...%.....................752........414......480.................276.952...................-...*.....
+.......131.......*654..590.................819..........$..........-.347*..................294.....776...&...*........741.....830....230....
+..586%.....968...........+..........319..............628......516............933..........&........+..........600.....*........*............
+............*...................-..*.........................%........................726...876..........772..........99......145......785..
+...........710...............352...842..941...802.....133............474.&235.................*.............*561..........#...........*.....
+.......................................=...............*........=...................642.......774......*.........67..@921.374.......165.....
+..250........................8..........................968...375........224...#.......*............497.833........-........................
+...$.....................584..*978..107&....471...............................486....408......................................@241.-555.....
+......662$........%......&.....................*..#186...550........=309............................76.......399............................
+................281.........808....666.......207.........-...615.................59=....569.....197*...42...%...........572....+231...%.....
+....758.$777................%.....*...............433................646.834.............@.............*.........543...................769..
+....*................995...........628...............*..................*..............=..........341...583.112+...*.......74..=341.........
+.....775.................................744...278.128.......................126...940.839....=.....*............385.499...*............302.
+..........*177...574.............+.......+......*................561#...590.*......$.........231...586....................212...........#...
+.......418....................954..433.......484...........526...........*..643......-......................&..778...............701........
+.414..............493.....566.....*......=..................*....236...748..........543...593...*745.......57.........&.........*...........
+....*................*.....*....46....659..%.&980..........66....................36...........87...................994.......218...443......
+226.241.893%..........257..312............69........792............/...........+...................$257..................790........./...184
+................................................854*.............909.139..*276.680..&.........432............580....248.................*...
+....136*755...@.950......................173.............95..........+...............2.877.......*668......+..+.........918*.......62....571
+............333.*....812...$.428.................*496..................903@...258&.............-........650.................281......+......
+......500.......6....*...719.+......285.......955.....712*12..561.497..............667...&.843..777.................427................@....
+.....&............506..................=..359................#....................*.....24.../.........544.436..........492=........272.....
+.........377..........=............41-......+...........229........761...540....391..............*565.....*......449..........665.......#...
+.887....*.....906..141.....357...$.................%......*.................#.............-..874......811...9.....*....$113......*.967...628
+......406............../.......637.551....223....162.......251...........................702.*......%......*....&.905.........747...........
+....*...........321.....801............=.....-.#...............390........845..12............399...126....283.566.....124*102......&........
+..447..+....935...-..............41.68.87.92...105....178=....*..........*.......*..92..............................................21......
+......505...................................*................614....948..237..512......108.58..162...454@...........395.......5.............
+...........454..10.../............101........885.......................*..................*...*....................*........................
+..........%....*....534......114.*................../.95......427.210..674.......371.903......81....................922.....231...346.......
+...525........887...........#........162....211..166..@......*.....*.......281......*....................835.635............*.....*.....828.
+.....*..............571...............+........-.............933.629./25..*...........977........*............*...........178.....749..*....
+..993.........-................516/................394...56................477....545.*.......251.858......499....435.........&.........170.
+.......967..73.....&.....35.........656....842.....*......*........................*...749............%..........#...........622............
+......+...........366.86..*...........#.....=.....162...332.............-..........859............102..488.........................717......
+347.........32........#....393.................*.................252...262....951.......823...................784...358.603.......*.....515.
+......917..*.....$..........................642.394..195...*..................*....$......*.448.519................*......*....302..870.*...
+...-..*...674.....780.547....287....................*....504...................803.688.831....*..*...........617......./..476........*...9..
+.286..738................#.......-511..11.....581..268.....................439.............523..459...............69..373............887....
+......................*...................555*.........45....638...964.......-...$..........................................88*.............
+.........802...+805.77.648.....66.676........................&..../....26......708...+.-981...239%........953..................672..........
+......./.....#.............11.+......*....=...........756.............*.....-......298..................=...*..751.......433.........727....
+....553.......659....907...@......@..530.218.............*......259..821...716.980..........89..851...793.614.......943....*.....961*.......
+........*339........$..........373...............................*...............$.....667..$......*..........149.....+..613................
+..987..................*...................670...105.....347....383.605..................@....447...124..........*737...........562..15*445.
+........-.....595*7..215.839.781.............*..*...........$.............810....*............*...........350....................*..........
+.........929.............*......*...362@...890...975....#..........2....../...252.576.......78...........+........685.240......695..........
+.................475......598.152........................841.&880..#......................&....693....=.............=.....28........&384....
+............472..*.......................$..320.412*...................304...=.-.........395......=.113....601..............................
+..324.738.........968...................755..*......101.......476..........90..342........................*.....638..182/...........704..139
+.........*..610*......601...................356.../.......633*....971..........................806.....#...240...*...................../....
+........683.....326.....*..@........749.........390.........................163@....800..483..*........792.....94...........................
+...600................957..741...../....376............817..899.......194........50.....@....96.368..................@.......+600....-......
+..........338%..........................*...............#....#.........*....304..+....*...........*...................236............284....
+..423........................&763.............947.................371.187..*.......356.441......201.......................285...............
+............75................................*....................*......696........................#...............................670....
+...*..........*.........426.......635..-....449.758*.......314.......*..............................246.........*................58..*......
+574.322........937.......*........#...116...........40.......*.@752..400........180....@......918.........195.49......983....559*.....82....
+...........*.........527..842.............................817...................../.270...445..*............*...............................
+........622.235..869*..........922*...............125*610..............*459...............&....455...........21.......964...................
+...................................465..%542.........................47......272............+..........775.............*.....328.....@......
+.................732*........51.&..........................853.222.........................672....148....+.........572..499.+....*....12....
+....125..............581....*...909.787.......720*263......*....$..881%....623*891..515..........=..................*.........726.78........
+.....%..........715......935.........*....650............874.......................*.........127....................923.....................
+................$.............330*..444....$....653............%....345..915.....960.395...........823.706..734.341...............295...342.
+.............................................99..-...........465...&......*.............*416......*..........@....*...@......630.....*......
+.....@.........356.......................399.+......+.....................349..................542..............853.375.......=.......132...
+....77...=719.@.......*...../662...........*...233...781..............................&687................%.................................
+.....................791..................933.*..........931.....884*...........-...................../...112..%601..........857............
+583.....*292...................................438...................424......603.416.........484...104.....................*.......706.....
+.............................452.......549.............24...997....................*............*.........767...379..........192............
+........413.................&.....#......*....*.......*.........523.........443.412.....546......859..138*........&..66.576.................
+..................../...........348....816.106.391......................447.........../...*..895.......................*................595.
+...........#......771.675..................................673............*........176...856..=...627*308..696...............658............
+....489..51...174......%..676......$..........*........332.*.............373.350................-..........*.................*.....*........
+181.*........*...............*822.136..888.642.202.......*..65....958........*........358........510.....*..504..747...993....339..764......
+...........540........................................308...........@.895..942.506......*....791.......166......#...../..../...........668..
+...................452............-....631..............................*........&.....253..../............897......*....602................
+..748....249.24............21...847...&.....194...@...............@...865................................=....*.....550.....................
+....*.......*.....658...................573*.......679.....760/..431.................481..........907....130.912...............240...998....
+.605...............*.......25.......#..................................726..646....#..........607..*................698..........*...+......
+...........301&.572........#.....101...................148........55...........*.122........./........953..........-.....602.321.929.....998
+511.870...............@....................808.........*........*............257.......206............@........685..........*...............
+.............903...398.....588......114.......*...990...677.....182.10$...........%.........%.................%........................2*...
+................*...........*...490...........987....=......803.........98......485.493.868..945.805......-........89............=944....296
+......640.......669.........630..*.......................-....&..582.......341.........*.........*.........939......*.......................
+.........*34....................557.....130....265.....21........*...625..$...............*796..690................997...489....293.........
+....917.......916............@.................*.................948..&...........148...67..................833........./..........-...943..
+....$........*......849...4$..300..217........58..........................643.170...........................................................
+.........511..853......*..............*...........355.............35-.....-....@..636.....=...595..131...496..........................=687..
+............%........&..476......452...435.....%...*.....700..........391........*.....418.........*.........39*.&..........................
+.16...=.............500.....................426...469.....*.............&.....#..522.............939..............395.660...................
+...*.696.....*869........995.....413...................864.................991.......598......42.........................@..806..386........
+337.......983.....610........104*.......100*......................-............$79....@...461*....*685...270................*...*........240
+......................207...........311.....741..................337.........*.................381.......*........979.....712.374.879.......
+.......@.....554.........*.....485.....................853.............*..276.230...........7...........740...755*..................-.......
+....927.../.....#...#...46........*466...........=.................=.531...........593......*..%....................961.....@...............
+..........65......294..........................30..339..856.....966...........904..........791..841..........438.......#...747..............
+..419...................614................972.......*...............131.......=.......................716..........21......................
+.....=.79..............................&....*......76.....243..............115.......757...364..870....&...890......+...840..........55.....
+....................383....*48...571...124...749............*................-..&.....*......*...*........@.....................201./.......
+......752.....470.......+..........*........................964.......452........776...413...9..791...257.......687.....84......*...........
+.........*502.*......873..850..573..729....@.....197....................*...798.........................@......*........&.....65...200..357.
+...............307.............*..........597.....*...473.....=.......332....*..311..861*399...................472..................*.../...
+.820.....................65....754.............713......*.....739...........622...............768/..................................967.....
+....*.......180..........*...*.........218...............260......................519...933..........271.....36....132.....147..............
+.935..4......@..254...815..58.689.......*..........................159..............$...*..........*....&...$.......*......../.414*164......
+.......-.388.......%....................284...........833...770...*...........705.....697.......466.239.......332....489....................
+....#.....*...........@.......288............972.........-.*......723.....*....*................................*............=..........592.
+...535..........*.267..193.......*..367.....*..............132............509..776.790..@....466..........715.758...*115.....608............
+.............979..*..........8.353.....*...329...@544.913..........................*.....759.*......704..%............................712...
+...................52..170...*......459................/...#.......161........813.510.........207......@..........581..................*....
+............#...........*..978...........581.9*815..........450...............*.......................................604.......308...725...
+............16.........269............../.............195........217*216......890......................534.....84......-......-.............
+....339...........................459.......644..........*.........................636.....113...%154...*....................127.....#348...
+349...*.............402...735......@................182.121...134........%255.276...%...&.../............460....#......79...................
+....503....22.............#.....$............38.....+...........*....-11.......*......326...../....*853.........216......*.../180.....16....
+..........*......92.............456..619......*..-...........=...103..........190..........353..982......25*........465.209.................
+...485.350..........949...994.......*....379..3.22........972.........713.734.........262...........$.......846.......*.............333-....
+....................*..../....*121.729..+............325.............*.......*..........*........374..............+..769.....811............
+......-..............788...488....................................851....679......*......487.....................368.........*........*.....
+....612..528...255.................364.....................130.................317..251...............................665.206..972.957.184..
+..........*..../.......337..475*......&..391...347...795....*.........................*......722..666...............@.......................
+........823.$.....+.../.........716......*........*....*.....247......329...........697......*.....*....%.....168....624.........592........
+...98*.......916..915......245............277..&..353...719..........$.....................846.601.37...47......................*......519..
+......91..............720..*........$985......976......................834...........461.........*...........................266....#...*...
+68....................*....45..............&...........79*888.250*461.*.......%................574..........3*....408..380........383.192...
+...........836......383...........557.....672..........................764.....944............................827...........................
\ No newline at end of file
diff --git a/4/4-1.py b/4/4-1.py
new file mode 100644
index 0000000..2826fa8
--- /dev/null
+++ b/4/4-1.py
@@ -0,0 +1,37 @@
+def get_input():
+    with open("four.txt", "r") as f:
+        return [l.strip().split("\n") for l in f.readlines() if l != ""]
+
+
+def get_score_for_card(scratchcard):
+    winning, actual = scratchcard[0].split("|")
+    winning = winning.split(":")[1].split(" ")
+    actual = actual.split(" ")
+    score = 0
+    for w in winning:
+        if w != "":
+            if w in actual:
+                if score == 0:
+                    score = 1
+                else:
+                    score = score * 2
+    return score
+
+
+def get_total_score(scractchcards):
+    score = 0
+    for card in scractchcards:
+        points = get_score_for_card(card)
+        score += points
+    return score
+
+
+def main():
+    scratchcard_dict = get_input()
+    score = get_total_score(scratchcard_dict)
+    print(score)
+
+
+main()
+
+#  26218
diff --git a/4/4-2.py b/4/4-2.py
new file mode 100644
index 0000000..66dceb9
--- /dev/null
+++ b/4/4-2.py
@@ -0,0 +1,55 @@
+def get_input():
+    with open("four.txt", "r") as f:
+        return [l.strip().split("\n") for l in f.readlines() if l != ""]
+
+
+def get_score_for_card(scratchcard):
+    winning, actual = scratchcard[0].split("|")
+    winning = winning.split(":")[1].split(" ")
+    actual = actual.split(" ")
+    score = 0
+    for w in winning:
+        if w != "":
+            if w in actual:
+                score = score + 1
+    return score
+
+
+def get_scores(cards):
+    card_dict = {}
+    for card in cards:
+        card_num = str(card[0][5:8]).strip().replace(":", "")
+        score = get_score_for_card(card)
+        card_dict[int(card_num)] = {"score": score, "copies": 1}
+    return card_dict
+
+
+def increment_copies_for_card(card_dict, card_num):
+    score = card_dict[card_num]["score"]
+    for i in range(1, score + 1):
+        if card_num + i > len(card_dict.keys()):
+            return
+        card_dict[card_num + i]["copies"] += card_dict[card_num]["copies"]
+
+
+def sum_copies(card_dict):
+    return sum([card_dict[i]["copies"] for i in card_dict.keys()])
+
+
+def increment_copies(score_copies_dict):
+    for card_num in score_copies_dict.keys():
+        increment_copies_for_card(score_copies_dict, card_num)
+    return score_copies_dict
+
+
+def main():
+    scratchcards = get_input()
+    score_copies_dict = get_scores(scratchcards)
+    score_copies_dict = increment_copies(score_copies_dict)
+    total_scratchcards = sum_copies(score_copies_dict)
+    print(total_scratchcards)
+
+
+main()
+
+# 9997537
diff --git a/4/4-test.txt b/4/4-test.txt
new file mode 100644
index 0000000..71f208a
--- /dev/null
+++ b/4/4-test.txt
@@ -0,0 +1,6 @@
+Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53
+Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19
+Card 3:  1 21 53 59 44 | 69 82 63 72 16 21 14  1
+Card 4: 41 92 73 84 69 | 59 84 76 51 58  5 54 83
+Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36
+Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11
\ No newline at end of file
diff --git a/4/4.txt b/4/4.txt
new file mode 100644
index 0000000..6f6e972
--- /dev/null
+++ b/4/4.txt
@@ -0,0 +1,201 @@
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+Card 163: 41  6 57 96  5 21  9 89 65 27 | 26 12 23  9 17 89 33  2 28 65 92 10 97 27 96 56 80 64 90 50 52 46 42  6  5
+Card 164: 53 51 16 32 60 84 55 14 18 25 | 18 52 56 28  6 89 80 19 23 29 57 34  8 70 79 41 91 90 96 88 66 35 97 44 82
+Card 165: 17 66 59 23 35 45 32 49 56 26 |  2 74 97  9 80 76 12 50 31 15 53 41 56 33 30 98 20 44 25 81 91 45 55 99 24
+Card 166: 92 25 70 80 85 88 62 81 61 43 | 40 62 21 83 44 18 87  5 81 43 13 10 85 30  1 53 99 79 68 16 49 20 56  7 15
+Card 167: 36 63 98 92 11 59  6 47  2 83 | 41 90 83 68 54 64 25 80 56  7 99 16  5 30 27 88 63 11 22 67 81 17  9 39 95
+Card 168: 64 20 56 74  5 21 70 52 33 58 |  4 64 28  7 44 80 12 38  8 89 83 57 37 54 87 69 48 63  2 72 78 85 62 60 15
+Card 169: 13 92 14  8 98 84 54 85 97 38 | 51 90 69 98 38 13  4  8 67  5 91 14 54 68 10 18 83 56 41 25 81 73 58 17 62
+Card 170: 54 39 20 12 50  6 83 85 33 45 |  3 97 19  5 61 66 81 46 24 56 29 92 52 85 73 43 71 13 60 12 36 62 64 35 32
+Card 171: 33 36 27 29 93 73 83 62 60 82 |  4 71 14 72 45 58 10 38 12 69 27  3 95 31 84 34 66 83 21 87 22  5 75 53 35
+Card 172: 92  9 73 82 15  6 44 28 88 34 | 99 78 11 46  9 36 89 65 17  8 16 94 68 63 12 54 25 33 69 47 13 38 93 50 59
+Card 173: 41 10 43 83 81 39 66 17 28 63 | 48 79 29 20 64 59 55 46 47 45 70 62 37 16 84 68 82 88 67  2 65 97 18 56 14
+Card 174: 53 73 55 83  9 57 87 35  1 42 | 66 52 56 76 19 92 78 91 82 87 20 39 31 72 43 71 11 33 15 18 75 84 46 47 22
+Card 175: 93 51 74 60 92 84 87 58 81 34 | 67  7 99 68 30 66 27 43 65 71 28 50  2 13 32 26 72 76 17 31 49  3 54 95 82
+Card 176:  3 92 48 97 73 37 84 44 53 91 | 21 35 42 99 87 36 31 43 79 52 89  6 59 14 57 26 76 33 38 19 82 63 74 25 39
+Card 177: 46 93  6 62 56  3 76 64 59  7 | 88 46  7 98 93 76 60 59  6  3 72 64 21 40 77 78 62 47 61 42 45 99 56 28 41
+Card 178: 43 69 96 12 88 93 97 33 80 20 | 58 94 56 93 12  2 20 24 14 40 27 73 97 80 99 43 74 16 91 88 33 96 71 25 69
+Card 179: 59  1 88 53 87 90 39 32 97 89 | 70 57 90 20 73 35 32 88 58 71 36 59 33  1 55 97 87 98 45 39  9 96 53 60 89
+Card 180: 33 19 87 82 90  1 14 78 84 35 | 89 19 20  3 66 23 87 54 78 39 65 84 35 83 33 69 14 90 44 49 72 38 75 82  1
+Card 181: 60 32 78 83 82 29 90 14 46 87 | 63 72 92 39 75 10 43 40  7 89 11 32 86 54  4 90 68 45 95 91 13  1 56  6 29
+Card 182: 11 18 63 73 64 39  9 92 82 62 |  8 27 69 64  3 53 73 11 21 39 10 18 35 44 56 62 75 72  4 51  6 42 82 37 76
+Card 183: 88 56 32 39 23 49 92 50 59 28 | 92  2 48 32 63 49 59 83 56  1 91 41 50 88 28 17 39 57 20 36 34  6 60 23 42
+Card 184: 34 97 99 76 32 75 69 83 60 79 | 44 86 52 99 85 32 34  4 28 79 76 46 22 83 54 56 60 31 75 51 80 89 45 69 97
+Card 185: 74 35 67  1 55 18 60 37 17 50 | 85 50 44 20 87 14 22 32 55 18 17 59 28 93  1 96 68 37 74 60 98 97 67 35  4
+Card 186: 44 36  3 80  6 24 90 81 34 61 | 76 69 14 77 53 21  4 16 18 46  9 59 34 38 98 13 30 11  7 17 88 41 42 99 23
+Card 187: 54 53 39 24 80 78 13 46 17 67 | 62 91 86 52 80 59 26 78 73 46 16 77 18 37  9 55 13 17 72 69 32 68 67 34 81
+Card 188: 50 19 11 73 61 75 67 54 12 84 | 73 84 97 56 74 59 35 75 61 14 15 19 24 12 51  6 58 11 89 67 53 25 21 54 50
+Card 189: 76 48 38 17 97 67 42 23 82  6 | 73 10 17 70 85 95 54 43 93 91  3 82 26 16 23 76 33 38 67 48  5 53 97  6 42
+Card 190: 61 19 93 50 11 56 32  5 84 37 | 32 62 82 84 50 61 91 15 69 19 68 20 74 92 10 55 11 93 39 37 18  5 47 22 46
+Card 191:  2 58 93 26 23 31 60 74 35 47 | 74 64 26 68  8 60 11 73 93 42 87  2 31 97 61 47 65 24 58 66 53 38 94 46 88
+Card 192: 64 37 49 88 95 79 29 59  2 99 | 39 63 31 68 36 24 60  9 94 89 93 13 45 77 38 55 14 23 92 83 29 33 44 34 71
+Card 193: 19 23 99 89 26 80 63 60 59 66 | 78 80 99 60 66 47 84 59 24 61  5 63 67 26 87 42 96 10 54 98 19 81  4 43  8
+Card 194:  6 36 31 40 89 19 63 16 60 68 | 75 84 91 77 40  5 81 10 52 86 19 96 16 58 30  6 78 61 82 74 97 89 90 62 37
+Card 195: 45 54 92 67 47 65 91 98 87 29 |  5 72 15 25 88 36 73 20 91 90 83 46 87 47 10 22 69  2 62 57 28 93  3 59  1
+Card 196: 88 34 96 16 54  9 17 89 20 52 | 20 54 47 61 12 57 38 11  8 85 74 52 90 77 41 46  4 89 19 39 34 83 55  7 97
+Card 197: 38  3 57 72 97 45 66 73 56  8 | 83 68 28 64 58 66 85 15 53 65 23  3 37 87 20 17 47 63 55 69 88 70 62 92 76
+Card 198: 98 66 29 17 83  9  6 84 36 70 | 21 10 31 84 93 14 67 29 24 91 12 41 99 19  5 56 83 74  2  8 79 95 64 49 53
+Card 199: 41 93 33 26 45 65 97 39 20 95 | 82  8 30  6 34 58 49 16 29 91 64 80 50  9 74 59 19 60 69 53 61  3 83 67 35
+Card 200: 86 85 91  2 27 65 45 73 60 69 | 66 26 28  7 98 80 14 52  6 35 57 46 39  4 30 55 94 75 82 83 96 13 74  9 58
+Card 201: 30 53 41 42 10 51 37 63 46 67 | 84 74 33  5 86 32 45 83 52  1 13 43 65 49 98 91  9 11 96 66 15 62 27 44 24
\ No newline at end of file
diff --git a/5/5-1.py b/5/5-1.py
new file mode 100644
index 0000000..e414467
--- /dev/null
+++ b/5/5-1.py
@@ -0,0 +1,68 @@
+def get_input():
+    with open("five.txt", "r") as f:
+        return f.readlines()
+
+
+def format_input(input):
+    return_dict = {}
+    current_title = ""
+    current_map = []
+    for i, l in enumerate(input):
+        if i == 0:
+            parts = l.split(": ")
+            return_dict[parts[0]] = parts[1].split(" ")
+            continue
+        if input[i][0].isalpha():
+            parts = l.split(" ")
+            current_title = parts[0]
+        if input[i][0].isdigit():
+            parts = l.split(" ")
+            current_map.append([p.replace("\n", "") for p in parts])
+        if input[i][0] == "\n":
+            return_dict[current_title] = current_map
+            current_map = []
+            current_title = ""
+    return_dict[current_title] = current_map
+    return return_dict
+
+
+def get_current_map(input, current_map_prefix):
+    current_map = [key for key in input.keys() if current_map_prefix in key]
+    assert len(current_map) == 1
+    current_map = current_map[0]
+    return current_map
+
+
+def follow_seed_to_location(val, map, current_map_prefix):
+    # if we are past the x-to-location map, return the current value
+    if current_map_prefix == "location-":
+        return val
+    current_map = get_current_map(map, current_map_prefix)
+    next_map_prefix = current_map.split("-")[-1] + "-"
+    for row in map[current_map]:
+        dest, source, range_ = [int(i) for i in row]
+        if source <= val and val <= source + range_:
+            diff = val - source
+            destination = dest + diff
+            return follow_seed_to_location(
+                destination, map, current_map_prefix=next_map_prefix
+            )
+    return follow_seed_to_location(val, map, current_map_prefix=next_map_prefix)
+
+
+def follow_seeds(input):
+    locs = []
+    for seed in input["seeds"]:
+        loc = follow_seed_to_location(int(seed), input, current_map_prefix="seed-")
+        locs.append(loc)
+    return locs
+
+
+def main():
+    input = get_input()
+    input = format_input(input)
+    locations = follow_seeds(input)
+    print(min(locations))
+
+
+main()
diff --git a/5/5-2.py b/5/5-2.py
new file mode 100644
index 0000000..ffa7233
--- /dev/null
+++ b/5/5-2.py
@@ -0,0 +1,119 @@
+import time
+
+
+def get_input():
+    with open("fivetest.txt", "r") as f:
+        return f.readlines()
+
+
+def format_input(input):
+    return_dict = {}
+    map_title = ""
+    current_map = []
+    # there is 100% an easier way to do this,
+    # but this works.
+    for i, l in enumerate(input):
+        if i == 0:
+            parts = l.split(": ")
+            return_dict[parts[0]] = parts[1].split(" ")
+            continue
+        first_letter = input[i][0]
+        if first_letter.isalpha():
+            # this is the start of a new map section
+            parts = l.split(" ")
+            map_title = parts[0]
+        if first_letter.isdigit():
+            # this is a row in the current map section
+            parts = l.split(" ")
+            current_map.append([p.replace("\n", "") for p in parts])
+        if first_letter == "\n":
+            # this is the end of a map section
+            return_dict[map_title] = current_map
+            current_map = []
+            map_title = ""
+    # capture details of last map section, since there is no newline at the end
+    return_dict[map_title] = current_map
+    return return_dict
+
+
+def get_seed_ranges(seeds):
+    # takes a list of numbers and returns a list of pairs of numbers
+    pairs = []
+    pair = []
+    for i, s in enumerate(seeds):
+        pair.append(int(s))
+        if i % 2 == 0:
+            continue
+        else:
+            pairs.append(pair)
+            pair = []
+    return pairs
+
+
+def get_current_map(input, current_map_suffix):
+    # find the current map key from the given suffix
+    current_map = [key for key in input.keys() if current_map_suffix in key]
+    assert len(current_map) == 1
+    current_map = current_map[0]
+    return current_map
+
+
+def get_seed_or_none(seed_ranges, val):
+    for [frm, to] in seed_ranges:
+        if val >= frm and val <= frm + to:
+            print(f"found matching seed value: {val}")
+            return val
+    return None
+
+
+def find_seed_from_loc(input, val, current_map_suffix):
+    """
+    Recursive function which works backwards from a location value to
+    find any corresponding seed values.
+    """
+    # if we are at the start of the map chain (i.e. trying to do x-to-seed):
+    if current_map_suffix == "-seed":
+        seed_ranges = get_seed_ranges(input["seeds"])
+        return get_seed_or_none(seed_ranges, val)
+
+    current_map = get_current_map(input, current_map_suffix)
+    # next map suffix will always have the prefix of the current map suffix
+    # e.g. x-to-y will always point to the next map suffix of z-to-x
+    next_map_suffix = "-" + current_map.split("-")[0]
+
+    for row in input[current_map]:
+        dest, src, range_ = [int(i) for i in row]
+        # if the current value is in the range of the current row:
+        if val >= dest and dest + range_ > val:
+            new_val = val + src - dest
+            # continue up the chain using the new value
+            return find_seed_from_loc(input, new_val, next_map_suffix)
+    # if the current value is not in any of the ranges of the current map:
+    # continue up the chain using the same value as previously
+    return find_seed_from_loc(input, val, next_map_suffix)
+
+
+def find_lowest_location(input):
+    #  brute force babyyyyy
+    r = 10000000
+    for loc in range(r):
+        # uncomment for progress tracking - will slow down code by around 30%
+        # if loc % (r/100) == 0:
+        #     print(f"Currently {loc/r*100}% done")
+        seed = find_seed_from_loc(input, loc, current_map_suffix="-location")
+        if seed != None:
+            return loc
+
+
+def main():
+    t = time.perf_counter()
+    input = format_input(get_input())
+    lowest_loc = find_lowest_location(input)
+    print(f"for location value: {lowest_loc}")
+    t_f = time.perf_counter()
+    print(f"finished in {t_f - t} seconds")
+
+
+main()
+
+# 9622622
diff --git a/5/5-test.txt b/5/5-test.txt
new file mode 100644
index 0000000..bd902a4
--- /dev/null
+++ b/5/5-test.txt
@@ -0,0 +1,33 @@
+seeds: 79 14 55 13
+
+seed-to-soil map:
+50 98 2
+52 50 48
+
+soil-to-fertilizer map:
+0 15 37
+37 52 2
+39 0 15
+
+fertilizer-to-water map:
+49 53 8
+0 11 42
+42 0 7
+57 7 4
+
+water-to-light map:
+88 18 7
+18 25 70
+
+light-to-temperature map:
+45 77 23
+81 45 19
+68 64 13
+
+temperature-to-humidity map:
+0 69 1
+1 0 69
+
+humidity-to-location map:
+60 56 37
+56 93 4
\ No newline at end of file
diff --git a/5/5.txt b/5/5.txt
new file mode 100644
index 0000000..a671fd8
--- /dev/null
+++ b/5/5.txt
@@ -0,0 +1,197 @@
+seeds: 565778304 341771914 1736484943 907429186 3928647431 87620927 311881326 149873504 1588660730 119852039 1422681143 13548942 1095049712 216743334 3671387621 186617344 3055786218 213191880 2783359478 44001797
+
+seed-to-soil map:
+1136439539 28187015 34421000
+4130684560 3591141854 62928737
+2493176649 2843539493 216586902
+4035246184 3979580848 40675839
+784987951 2449883248 10512167
+1230114095 458474273 89127842
+3591141854 4278550666 16416630
+795500118 1007741104 49669915
+4075922023 4020256687 54762537
+1170860539 385724159 59253556
+1754134353 1447758461 710855281
+2464989634 0 28187015
+3811089926 3654070591 224156258
+367106182 564462768 34737691
+0 3060126395 64826339
+1438999297 87449756 298274403
+1319241937 901480302 106260802
+1425502739 444977715 13496558
+906091129 2158613742 230348410
+401843873 2460395415 383144078
+1737273700 547602115 16860653
+64826339 599200459 302279843
+2709763551 1057411019 390347442
+845170033 2388962152 60921096
+3607558484 4075019224 203531442
+3100110993 3124952734 265337006
+4193613297 3878226849 101353999
+3365447999 62608015 24841741
+
+soil-to-fertilizer map:
+2997768542 2385088490 141138894
+2483957796 2361581050 23507440
+98641524 1346083581 385280737
+3138907436 2256873732 8670947
+0 2158232208 98641524
+3147578383 2265544679 96036371
+1035235183 2879344429 108036359
+2567031012 2526227384 63435416
+740156227 2589662800 180702628
+2630466428 1790930094 367302114
+1029837856 0 5397327
+1143271542 5397327 1340686254
+483922261 2987380788 256233966
+2507465236 1731364318 59565776
+920858855 2770365428 108979001
+
+fertilizer-to-water map:
+1539871014 1431400479 38399903
+4189242304 3947275099 105724992
+2012473116 0 61612686
+3673653298 3769966020 177309079
+25380533 833117788 21807501
+143369400 1411638591 19761888
+2698209531 61612686 40666379
+401367210 2888296065 27849039
+3850962377 4057978463 170640183
+1076364770 854925289 39443942
+0 2048878915 25380533
+2682826842 1483785677 15382689
+4026580932 4228618646 66348650
+790899137 2074259448 70405647
+2738875910 2609016218 230235412
+2090748148 1854132037 12185242
+163131288 1499168366 238235922
+1115808712 3002097202 63461270
+545943998 1215727887 195910704
+4092929582 3673653298 96312722
+1000530579 3065558472 75834191
+2074085802 2916145104 16662346
+429216249 1737404288 116727749
+1578270917 2174814019 434202199
+2969111322 102279065 44844471
+1179269982 669063687 164054101
+2463111278 507301424 161762263
+741854702 2839251630 49044435
+3013955793 894369231 236513741
+861304784 2144665095 30148924
+1525885719 1469800382 13985295
+132032949 2932807450 11336451
+2102933390 147123536 360177888
+47188034 1130882972 84844915
+4021602560 4053000091 4978372
+2624873541 2944143901 57953301
+891453708 3141392663 109076871
+1343324083 1866317279 182561636
+
+water-to-light map:
+1509583382 1639808290 20361832
+3841220400 2799952377 116887408
+1472887638 3349716751 36695744
+1375316591 4197396249 97571047
+1030032900 38536653 44339012
+3776233310 1557050237 64987090
+1857053855 3386412495 71799907
+2963593546 2694182899 38493443
+3758462347 1622037327 17770963
+1018869652 82875665 11163248
+1308040556 2732676342 67276035
+1928853762 3953749938 243646311
+2488961036 3503789336 239267964
+3562290347 3458212402 6096433
+3568386780 1308040556 190075567
+2728229000 1997029610 235364546
+215668494 0 38536653
+1646361217 3743057300 109790942
+1529945214 3233300748 116416003
+1756152159 3852848242 100901696
+3958107808 1660170122 336859488
+3503356233 1498116123 58934114
+254205147 552157437 522214475
+3002086989 3464308835 39480501
+776419622 94038913 242450030
+2172500073 2916839785 316460963
+0 336488943 215668494
+3041567490 2232394156 461788743
+
+light-to-temperature map:
+3498288578 2645051323 42074132
+608593503 673232568 65024140
+0 1287033796 108723708
+3979313387 3634135302 315653909
+2652759587 3018896130 103365881
+1093544955 942695289 7961217
+2756125468 3501628238 132507064
+419683046 1625547778 126722533
+683243352 349510049 26140330
+1101506172 511314709 142580382
+1283347805 375650379 135664330
+673617643 24016268 9625709
+709383682 1238532395 48501401
+3763762608 2402322728 184668443
+3948431051 2621479653 23571670
+3660408219 2687125455 102463666
+3561232935 2586991171 34488482
+2459767392 3122262011 192992195
+1244086554 1754618583 31645052
+1073753155 1497748002 19791800
+3972002721 3949789211 7310666
+3540362710 4077337854 20870225
+1419012135 738256708 79984976
+1746461061 1457945428 39802574
+3595721417 4190079809 64686802
+1616767336 653895091 19337477
+1275731606 823578131 7616199
+108723708 818241684 5336447
+546405579 1395757504 62187924
+1498997111 950656506 117770225
+2888632532 3957099877 102103275
+1744112789 1752270311 2348272
+2233819388 2077946837 225948004
+3762871885 2401432005 890723
+2136282224 2303894841 97537164
+3311914546 3315254206 186374032
+2118147522 4059203152 18134702
+308182087 831194330 111500959
+114060155 0 24016268
+2077946837 4254766611 40200685
+971525741 33641977 102227414
+1636104813 1517539802 108007976
+138076423 1068426731 170105664
+3220042816 4098208079 91871730
+2990735807 2789589121 229307009
+757885083 135869391 213640658
+
+temperature-to-humidity map:
+1130946446 972737563 146373650
+1277320096 1760175559 41760032
+4151385320 4147641404 143581976
+2634337722 0 466605084
+1992884166 956487184 16250379
+4147641404 4291223380 3743916
+641064346 466605084 489882100
+1319080128 1801935591 673804038
+2009134545 2475739629 625203177
+0 1119111213 641064346
+
+humidity-to-location map:
+3903940466 3635148971 125939893
+1458128760 2186815403 67353660
+3125319983 1458128760 728686643
+2261072201 3994982121 66012689
+3854006626 2992363154 49933840
+1525482420 3780550419 183145699
+2233668127 3967578047 27404074
+2442260515 3138011064 466023456
+740912129 0 327948845
+2422798960 3761088864 19461555
+1708628119 3963696118 3881929
+2327084890 3042296994 95714070
+4029880359 3604034520 31114451
+1712510048 2471205075 521158079
+367508399 695457244 373403730
+2908283971 2254169063 217036012
+0 327948845 367508399
\ No newline at end of file
diff --git a/6/6-1.py b/6/6-1.py
new file mode 100644
index 0000000..6514039
--- /dev/null
+++ b/6/6-1.py
@@ -0,0 +1,29 @@
+
+TIME_DIST_DICT = {
+    35: 212,
+    93: 2060,
+    73: 1201,
+    66: 1044
+}
+
+def get_distance_travelled(time_holding, race_time):
+    return time_holding * (race_time - time_holding)
+
+def get_winning_times(record_time, distance):
+    winning_times = []
+    for t in range(1, record_time):
+        if get_distance_travelled(t, record_time) >= distance:
+            winning_times.append(t)
+    return winning_times
+
+def main():
+    distances = {}
+    for t, d in TIME_DIST_DICT.items():
+        distances[t] = get_winning_times(t, d)
+    prod = 1
+    for t, d in distances.items():
+        prod *= len(d)
+    print(prod)
+
+
+main()
\ No newline at end of file
diff --git a/6/6-2.py b/6/6-2.py
new file mode 100644
index 0000000..63a567c
--- /dev/null
+++ b/6/6-2.py
@@ -0,0 +1,24 @@
+import time
+
+time_ = 35937366
+dist = 212206012011044
+
+def get_distance_travelled(time_holding, race_time):
+    return time_holding * (race_time - time_holding)
+
+
+def get_winning_times(record_time, distance):
+    winning_times = []
+    for t in range(1, record_time):
+        if get_distance_travelled(t, record_time) >= distance:
+            winning_times.append(t)
+    return winning_times
+
+
+def main():
+    start = time.perf_counter()
+    print(len(get_winning_times(time_, dist)))
+    end = time.perf_counter()
+    print(f"ran in {end - start} seconds")
+
+main()
\ No newline at end of file
diff --git a/6/6.txt b/6/6.txt
new file mode 100644
index 0000000..cfc0d59
--- /dev/null
+++ b/6/6.txt
@@ -0,0 +1,2 @@
+Time:        35     93     73     66
+Distance:   212   2060   1201   1044
\ No newline at end of file
diff --git a/7/7-1.py b/7/7-1.py
new file mode 100644
index 0000000..5df477d
--- /dev/null
+++ b/7/7-1.py
@@ -0,0 +1,99 @@
+import functools
+
+CARD_STRENGTHS = ["2", "3", "4", "5", "6", "7", "8", "9", "T", "J", "Q", "K", "A"]
+
+HAND_STRENGTHS = [1, 2, [2, 2], 3, [2, 3], 4, 5]
+
+
+def get_input():
+    with open("seven.txt", "r") as f:
+        return [
+            {f.strip().split(" ")[0]: f.strip().split(" ")[1]} for f in f.readlines()
+        ]
+
+
+def get_multiples(hand):
+    multiples = {}
+    for card in hand:
+        count_ = hand.count(card)
+        if count_ >= 1:
+            if multiples.get(count_) is None:
+                multiples[count_] = {card}
+            else:
+                multiples[count_].add(card)
+    return multiples
+
+
+def compare_card_strengths(hand_1, hand_2):
+    hand_1 = list(list(hand_1.keys())[0])
+    hand_2 = list(list(hand_2.keys())[0])
+    while True:
+        if CARD_STRENGTHS.index(hand_1[0]) > CARD_STRENGTHS.index(hand_2[0]):
+            return 1
+        elif CARD_STRENGTHS.index(hand_1[0]) < CARD_STRENGTHS.index(hand_2[0]):
+            return -1
+        else:
+            hand_1.pop(0)
+            hand_2.pop(0)
+
+
+def get_hand_strength(hand):
+    cards = list(hand.keys())[0]
+    multiples = get_multiples(cards)
+    if multiples.get(5) is not None:
+        # five of a kind - 7
+        return 7
+    if multiples.get(4) is not None:
+        # four of a kind - 6
+        return 6
+    if multiples.get(3) is not None:
+        if multiples.get(2) is not None:
+            # full house - 5
+            return 5
+        else:
+            # three of a kind - 4
+            return 4
+    if multiples.get(2) is not None:
+        if len(multiples.get(2)) == 2:
+            # two pair - 3
+            return 3
+        else:
+            # pair - 2
+            return 2
+    if multiples.get(1) is not None:
+        # high card - 1
+        return 1
+
+
+def order(hand_1, hand_2):
+    hand_str_1 = get_hand_strength(hand_1)
+    hand_str_2 = get_hand_strength(hand_2)
+    if hand_str_1 > hand_str_2:
+        return 1
+    elif hand_str_1 < hand_str_2:
+        return -1
+    else:
+        return compare_card_strengths(hand_1, hand_2)
+
+
+def order_hands(hands):
+    return sorted(hands, key=functools.cmp_to_key(order))
+
+
+def get_winnings(ordered):
+    sum = 0
+    for i, hand in enumerate(ordered):
+        rank = i + 1
+        bet = list(hand.values())[0]
+        sum += rank * int(bet)
+    return sum
+
+
+def main():
+    hands = get_input()
+    ordered = order_hands(hands)
+    winnings = get_winnings(ordered)
+    print(winnings)
+
+
+main()
diff --git a/7/7-2.py b/7/7-2.py
new file mode 100644
index 0000000..29305d8
--- /dev/null
+++ b/7/7-2.py
@@ -0,0 +1,144 @@
+import functools
+
+CARD_STRENGTHS = ["J", "2", "3", "4", "5", "6", "7", "8", "9", "T", "Q", "K", "A"]
+
+
+def get_input():
+    with open("seven.txt", "r") as f:
+        return [
+            {f.strip().split(" ")[0]: f.strip().split(" ")[1]} for f in f.readlines()
+        ]
+
+
+def get_multiples(hand):
+    """
+    Returns a dict of the form:
+    {
+        1: {card1, card2, ...},
+        2: {card1, card2, ...},
+        3: {card1, card2, ...},
+        4: {card1, card2, ...},
+        5: {card1, card2, ...},
+        "J": jokers
+    }
+    where the key is the number of cards in the hand and the value is a set of the cards
+    Jokers are represented by the key "J", with the value being the total number of jokers.
+    (it just makes it easier to process)
+    """
+    multiples = {}
+    jokers = hand.count("J")
+    for card in hand:
+        if card == "J":
+            continue
+        count_ = hand.count(card)
+        if count_ >= 1:
+            if multiples.get(count_) is None:
+                multiples[count_] = {card}
+            else:
+                multiples[count_].add(card)
+    multiples["J"] = jokers
+    return multiples
+
+
+def get_hand_strength(hand):
+    # this is a disgusting function
+    cards = list(hand.keys())[0]
+    multiples = get_multiples(cards)
+    jokers = multiples.get("J", 0)
+    if jokers == 5:  # five of a kind - 7
+        return 7
+    if multiples.get(5) is not None: # five of a kind - 7
+        return 7
+    if multiples.get(4) is not None:
+        if jokers == 1: # five of a kind - 7
+            return 7
+        return 6 # four of a kind - 6
+    if multiples.get(3) is not None:
+        if jokers == 2: # five of a kind - 7
+            return 7
+        if jokers == 1: # four of a kind - 6
+            return 6
+        if multiples.get(2) is not None: # full house - 5
+            return 5
+        return 4 # three of a kind - 4
+    if multiples.get(2) is not None:
+        if jokers == 3: # five of a kind - 7
+            return 7
+        if jokers == 2: # four of a kind - 6
+            return 6
+        if len(multiples.get(2)) == 2:
+            if jokers == 1: # full house - 5
+                return 5
+            return 3 # two pair - 3
+        if jokers == 1: # three of a kind - 4
+            return 4
+        return 2 # pair - 2
+    if jokers == 4: # five of a kind - 7
+        return 7
+    if jokers == 3: # four of a kind - 6
+        return 6
+    if jokers == 2: # three of a kind - 4
+        return 4
+    if jokers == 1: #  pair - 2
+        return 2
+    return 1 # high card - 1
+
+
+def compare_card_strength(hand_1, hand_2):
+    hand_1 = list(list(hand_1.keys())[0])
+    hand_2 = list(list(hand_2.keys())[0])
+    while True:
+        if CARD_STRENGTHS.index(hand_1[0]) > CARD_STRENGTHS.index(hand_2[0]):
+            return 1
+        elif CARD_STRENGTHS.index(hand_1[0]) < CARD_STRENGTHS.index(hand_2[0]):
+            return -1
+        else:
+            hand_1.pop(0)
+            hand_2.pop(0)
+            if len(hand_1) == 0:
+                return 0
+
+
+def order(hand_1, hand_2):
+    hand_str_1 = get_hand_strength(hand_1)
+    hand_str_2 = get_hand_strength(hand_2)
+    if hand_str_1 > hand_str_2:
+        return 1
+    elif hand_str_1 < hand_str_2:
+        return -1
+    else:
+        return compare_card_strength(hand_1, hand_2)
+
+
+def order_hands(hands):
+    ordered = sorted(hands, key=functools.cmp_to_key(order))
+    return ordered
+
+
+def get_winnings(ordered):
+    sum = 0
+    for i, hand in enumerate(ordered):
+        rank = i + 1
+        bet = list(hand.values())[0]
+        sum += rank * int(bet)
+    return sum
+
+
+def main():
+    input = get_input()
+    ordered = order_hands(input)
+    winnings = get_winnings(ordered)
+    print(winnings)
+
+
+main()
+
+
+#  255730474 too high
+#  255725809 too high
+#  254414073 too low
+#  253496970 too low
+#  253733312 too low
+#  254326370 wrong
+#  254329870 wrong
+#  254837398 correct
diff --git a/7/7-test.txt b/7/7-test.txt
new file mode 100644
index 0000000..bf2815e
--- /dev/null
+++ b/7/7-test.txt
@@ -0,0 +1,5 @@
+32T3K 765
+T55J5 684
+KK677 28
+KTJJT 220
+QQQJA 483
\ No newline at end of file
diff --git a/7/7.txt b/7/7.txt
new file mode 100644
index 0000000..70c15a0
--- /dev/null
+++ b/7/7.txt
@@ -0,0 +1,1000 @@
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+8883K 68
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+63363 1
+44584 172
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+3K3TT 209
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+Q4384 538
+Q6A68 114
+Q5868 505
+665TK 820
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+82A34 915
+Q583Q 251
+97TJA 496
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+QQ6QQ 234
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+3A99A 465
+37734 444
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+2J673 492
+5J744 416
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+57J77 455
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+22J72 200
+9T7A6 310
+47777 25
+A3685 503
+T5A68 100
+979J8 528
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+QQ954 598
+5KKKK 876
+5T5TT 779
+3992T 678
+5QQQ9 265
+3592K 924
+5554A 493
+T5698 170
+7496J 488
+TT474 192
+JK95A 80
+AAJJJ 40
+43644 307
+J57K5 650
+J8K82 961
+8J998 688
+T9984 9
+33J35 89
+J2AT9 985
+6239J 662
+88JJ8 595
+JK852 604
+66347 741
+Q6T69 278
+55665 696
+7942J 736
+35AK4 358
+7755J 384
+58A84 613
+5TTTT 919
+7A9T7 7
+K33QK 354
+AQQAA 235
+39TJT 196
+26229 976
+6664Q 865
+99QQQ 236
+374A6 956
+8QTT8 964
+A76AQ 112
+T8668 611
+66JJ6 729
+886Q6 814
+KK44J 993
+62AJ8 127
+ATJ64 402
+7K594 483
+96496 990
+7424J 761
+878K3 653
+486K3 980
+JQA44 852
+2TJ6J 339
+44T44 446
+73KTK 121
+T7787 513
+K67QT 717
+77287 136
+7QQJ8 18
+4342T 768
+5KK5J 847
+Q2Q7T 666
+6QJT2 529
+7T7A7 392
+J6676 445
+7733K 647
+Q676A 926
+QJQJQ 806
+QQQJ8 928
+48692 691
+JAA55 984
+J2423 800
+32JQ8 362
+T2744 937
+7J9TQ 277
+7K326 86
+3K9TJ 860
+77JKT 71
+46644 31
+23J2Q 323
+J3K96 393
+87QKK 456
+TQ5K2 569
+AAK9T 949
+56932 539
+Q5QQQ 356
+3Q4A2 126
+T53J2 283
+8732Q 461
+KTTKT 556
+Q8J3K 918
+JAAA7 340
+255KQ 469
+8A9AJ 201
+Q8965 144
+777J2 477
+A8AJQ 797
+3QQQ9 786
+6Q7T4 460
+QQQ82 656
+4K329 222
+A9979 190
+6T664 440
+4A434 153
+Q7JQ2 194
+7993J 651
+8822K 195
+7QQ77 464
+52295 371
\ No newline at end of file
diff --git a/8/8-1.py b/8/8-1.py
new file mode 100644
index 0000000..23b084e
--- /dev/null
+++ b/8/8-1.py
@@ -0,0 +1,41 @@
+ENUM = {"L": 0, "R": 1}
+
+
+def get_input():
+    with open("eight.txt", "r") as f:
+        return [f.strip() for f in f.readlines()]
+
+
+def create_dict(input):
+    d = {}
+    for i in input:
+        print("i", i)
+        if "LRR" in i:
+            d["ins"] = i
+            continue
+        if not i:
+            continue
+        print(i.split("="))
+        k, vs = i.split("=")
+        k = k.replace(" ", "")
+        v1, v2 = vs.replace("(", "").replace(")", "").replace(" ", "").split(",")
+        d[k] = [v1, v2]
+    return d
+
+
+def follow(d, start, depth=0):
+    next_ = start
+    for i, letter in enumerate(d["ins"]):
+        next_ = d[next_][ENUM[letter]]
+        if next_ == "ZZZ":
+            return depth * len(d["ins"]) + i + 1
+    return follow(d, next_, depth + 1)
+
+
+def main():
+    input = get_input()
+    d = create_dict(input)
+    print(follow(d, "AAA"))
+
+
+main()
diff --git a/8/8-2.py b/8/8-2.py
new file mode 100644
index 0000000..f1bf24e
--- /dev/null
+++ b/8/8-2.py
@@ -0,0 +1,64 @@
+import math
+
+ENUM = {"L": 0, "R": 1}
+
+
+def get_input():
+    with open("eight.txt", "r") as f:
+        return [f.strip() for f in f.readlines()]
+
+
+def create_dict(input):
+    d = {}
+    for i in input:
+        if "LRR" in i:
+            d["ins"] = i
+            continue
+        if not i:
+            continue
+        k, vs = i.split("=")
+        k = k.replace(" ", "")
+        v1, v2 = vs.replace("(", "").replace(")", "").replace(" ", "").split(",")
+        d[k] = [v1, v2]
+    return d
+
+
+def get_starting_group(input):
+    group = []
+    for i in input:
+        if i.endswith("A"):
+            group.append(i)
+    return group
+
+
+def follow(d, start, depth=0):
+    next_ = start
+    for i, letter in enumerate(d["ins"]):
+        next_ = d[next_][ENUM[letter]]
+        if next_.endswith("Z"):
+            return depth * len(d["ins"]) + i + 1
+    return next_
+
+
+def main():
+    input = get_input()
+    d = create_dict(input)
+    nexts = get_starting_group(d)
+    depth = 0
+    lengths = []
+    for n in nexts:
+        depth = 0
+        next_ = n
+        while True:
+            next_ = follow(d, next_, depth)
+            if type(next_) == int:
+                lengths.append(next_)
+                break
+            depth += 1
+    print(math.lcm(*lengths))
+
+
+main()
+
+#  8429602563785865 too high
+#  9064949303801
diff --git a/8/8-test.txt b/8/8-test.txt
new file mode 100644
index 0000000..59e2d47
--- /dev/null
+++ b/8/8-test.txt
@@ -0,0 +1,9 @@
+RL
+
+AAA = (BBB, CCC)
+BBB = (DDD, EEE)
+CCC = (ZZZ, GGG)
+DDD = (DDD, DDD)
+EEE = (EEE, EEE)
+GGG = (GGG, GGG)
+ZZZ = (ZZZ, ZZZ)
\ No newline at end of file
diff --git a/8/8.txt b/8/8.txt
new file mode 100644
index 0000000..e3792c5
--- /dev/null
+++ b/8/8.txt
@@ -0,0 +1,704 @@
+LRRRLRRRLRRLRLRRLRLRRLRRLRLLRRRLRLRLRRRLRRRLRLRLRLLRRLLRRLRRRLLRLRRRLRLRLRRRLLRLRRLRRRLRLRRRLLRLRRLRRRLRRLRRLRLRRLRRRLRLRRRLRRLLRRLRRLRLRRRLRRLRRRLRRRLRLRRLRLRRRLRLRRLRRLRRRLRRRLRRRLLRRLRRRLRLRLRLRRRLRLRLRRLRRRLRRRLRRLRRLLRLRRLLRLRRLRRLLRLLRRRLLRRLLRRLRRLRLRLRRRLLRRLRRRR
+
+DBQ = (RTP, NBX)
+NFX = (PXX, PLG)
+VBK = (BRV, DKG)
+BRS = (HLR, VBX)
+DDK = (SPR, TCR)
+FTS = (LJB, MDJ)
+BLH = (DFM, GGG)
+PCC = (GQR, RHD)
+QKN = (VVR, GBL)
+KHN = (FNB, LLT)
+HTD = (NPJ, BTL)
+FPL = (BRX, XQD)
+RCJ = (QKN, XPD)
+XRN = (RMQ, LQB)
+HGM = (VPV, SVR)
+RFG = (TLM, KPH)
+SSG = (QGC, KJV)
+LPA = (QQN, GNF)
+SVN = (VLM, BDX)
+VPF = (TTR, RNQ)
+VNK = (DSX, MCZ)
+KMS = (XNN, MTB)
+RLS = (NHX, CRT)
+VRS = (VBX, HLR)
+TVK = (MKG, NKB)
+CKH = (DFF, XPV)
+KBS = (LJC, PRS)
+JMT = (FPT, DLX)
+LRV = (QCD, RLF)
+TMM = (VPF, GKD)
+HKH = (PRS, LJC)
+GSM = (SVH, KRP)
+SLG = (PTL, SNJ)
+GVS = (DSN, CKH)
+QGC = (HKS, DFP)
+RFT = (VVQ, GMF)
+FDF = (JKV, JKV)
+MRL = (PKS, TKS)
+HBN = (BDX, VLM)
+CFB = (PPV, QVS)
+TFJ = (KGN, JND)
+HLB = (PFV, JXR)
+RFJ = (SKL, QCN)
+PQH = (KGN, JND)
+HGR = (FKL, XHR)
+CTB = (HNQ, HNQ)
+XMN = (CJV, LKQ)
+JVX = (FSS, CRC)
+SFH = (MXD, RHN)
+BRK = (QPL, DJB)
+HBX = (DSN, CKH)
+RFL = (VXB, FNF)
+GXP = (LHR, SMV)
+CHK = (NLQ, VCR)
+QPG = (HHL, KHB)
+VBC = (NFV, FST)
+QJF = (JXL, JJC)
+XKQ = (PCS, BSH)
+SKS = (SNN, QSN)
+GJJ = (VVG, XPR)
+DJP = (SJM, DNR)
+DQF = (MHG, BKZ)
+MSB = (BRX, XQD)
+PQR = (TLL, RVS)
+XGB = (RMT, HGF)
+HBD = (PFD, FDN)
+NSN = (RFJ, NJT)
+SNJ = (MVG, DBQ)
+NMV = (SKG, TDJ)
+PTN = (TNR, SSG)
+SBG = (CVH, LMJ)
+RDT = (SVQ, JTT)
+MRC = (BKF, QMJ)
+JKV = (CTB, CTB)
+CTX = (QHL, BDV)
+SQM = (DNR, SJM)
+MVG = (RTP, NBX)
+KKJ = (TQP, PST)
+QKX = (BRD, SFT)
+VFV = (NTL, VMQ)
+LXK = (SSL, MFR)
+HDH = (VPS, MJH)
+RTP = (CGJ, XJC)
+BXQ = (FLN, FLN)
+GKD = (TTR, RNQ)
+GPP = (SNN, QSN)
+GDQ = (JLS, TND)
+LTF = (GXP, TVB)
+GVB = (LSV, FRL)
+JCF = (HGR, GMX)
+VCR = (JTR, MCM)
+XJC = (DGP, XML)
+XKA = (SFC, CHQ)
+LJL = (VPX, PMS)
+CPH = (PCQ, QKX)
+VPV = (TFP, NJN)
+TDJ = (PRV, DBK)
+JGQ = (TPX, NMV)
+LJS = (GDQ, QPV)
+VHN = (CBJ, PFQ)
+JHT = (XHM, NRK)
+ZZZ = (HJS, LRV)
+KJV = (HKS, DFP)
+HNT = (XXT, KJT)
+RHD = (KQH, TMD)
+JKG = (HXJ, MGF)
+SPL = (TTB, STB)
+MBD = (CQK, NHH)
+TPX = (TDJ, SKG)
+HRC = (LBB, JLR)
+QHN = (JHT, THC)
+SPM = (DDG, MBK)
+MFG = (JBD, GSM)
+MHR = (PTN, HVB)
+RLF = (GMG, TDQ)
+XBQ = (KKN, QTN)
+GLB = (DHS, SXC)
+PRV = (PGC, NSK)
+SJD = (BXQ, GHF)
+THC = (XHM, NRK)
+GBL = (GGR, HTK)
+MDK = (JXX, DBD)
+NJT = (QCN, SKL)
+LLG = (KBL, LXK)
+RVS = (DDB, QRV)
+LHR = (LPL, TGJ)
+TBD = (NNB, CQH)
+DSN = (DFF, XPV)
+QQN = (HRV, PTT)
+XPP = (GSJ, RDT)
+CBJ = (JQL, RBX)
+RBX = (CNV, NKQ)
+DDG = (NBS, KTV)
+XNN = (TMC, GCG)
+DSX = (CGR, SGM)
+DFB = (RCJ, KJK)
+XTG = (RFG, XSD)
+PKQ = (DBD, JXX)
+XPD = (GBL, VVR)
+FFC = (JLR, LBB)
+GMG = (KFH, PTP)
+QHJ = (SHM, FKM)
+MXD = (XGB, LTX)
+SGM = (FTS, GXX)
+LTX = (RMT, HGF)
+RNQ = (SPL, DKH)
+NHF = (VXC, HRS)
+KFR = (JXR, PFV)
+NRP = (XNN, MTB)
+VDR = (LDL, JCP)
+FSS = (KXJ, GKL)
+QVS = (MKN, BLH)
+SNN = (SBM, PNH)
+VXB = (LLG, BHP)
+BPK = (QVS, PPV)
+SMV = (TGJ, LPL)
+CXF = (XKV, PVR)
+PGC = (NBJ, KCK)
+VLG = (DDG, MBK)
+FKL = (HFC, XPP)
+KFC = (XNM, CNR)
+FCC = (BRK, GLT)
+HQC = (JKV, JHQ)
+QQV = (CPG, HQD)
+VVG = (XGJ, XGJ)
+SVK = (HVH, HNJ)
+XQT = (LQX, HNT)
+JDB = (PXM, THR)
+JHR = (XRF, DHN)
+HRS = (TFJ, PQH)
+SVQ = (XHX, QNG)
+KGN = (FCV, SBH)
+GJX = (MFG, LMS)
+NBJ = (GVB, RMS)
+VQJ = (JPB, PDF)
+TKX = (JMT, LGM)
+FLL = (GTX, HKP)
+MFT = (FKM, SHM)
+JCP = (SSP, VMD)
+LPC = (KCD, JDB)
+XHR = (XPP, HFC)
+FKM = (DLL, XBQ)
+MGF = (NFX, MQS)
+JXJ = (MMP, CBT)
+DFP = (TGM, RHV)
+SSM = (NTC, TMT)
+DLX = (PXF, SBG)
+NNB = (TNT, MMF)
+QNG = (RHP, QBT)
+FLR = (CJK, QRL)
+RCP = (KKG, NTD)
+GJV = (SLG, DGN)
+FDN = (TBR, QDT)
+JTG = (RFT, PRC)
+LGM = (DLX, FPT)
+QDT = (CXV, SGD)
+HKP = (BLB, PCL)
+GXB = (MNH, GXT)
+QDS = (LTF, FDX)
+LMJ = (GJV, HVV)
+TDQ = (PTP, KFH)
+SGD = (HTT, PNR)
+XPV = (BPM, CPH)
+PTP = (MKL, KSP)
+DKG = (DKK, KNQ)
+QCN = (XTD, GQM)
+LSV = (GDK, VVD)
+MLG = (RLS, RKG)
+GMX = (FKL, XHR)
+QSN = (PNH, SBM)
+CHQ = (KSB, CXF)
+RHN = (LTX, XGB)
+LVX = (JSF, MLT)
+XHM = (FLR, QVK)
+NCJ = (CPG, HQD)
+MQV = (HBD, LDK)
+VVD = (QBV, FKF)
+QCD = (GMG, TDQ)
+GTH = (DLJ, DQF)
+KFH = (KSP, MKL)
+NFC = (PKQ, MDK)
+NCD = (FNB, LLT)
+MKG = (HNS, DDK)
+BTV = (KBS, HKH)
+QGL = (QTF, CVS)
+DDB = (DVF, HXV)
+PXF = (CVH, LMJ)
+NFV = (XMN, BQR)
+DGN = (SNJ, PTL)
+HHL = (PHC, QQJ)
+XPR = (XGJ, LVQ)
+PCQ = (BRD, SFT)
+MMT = (RDS, SRS)
+DMR = (GJM, BQS)
+QPL = (XNQ, CMN)
+PDF = (JBH, CTX)
+CVR = (STX, MBQ)
+LPL = (SFL, PHQ)
+FXX = (PNX, PQL)
+KLS = (NHG, CHF)
+NHX = (TMN, JLJ)
+NND = (QHN, XBR)
+JTT = (QNG, XHX)
+LML = (FDX, LTF)
+PCS = (LKV, LXX)
+SRV = (KCD, JDB)
+NSK = (NBJ, KCK)
+MRF = (NKP, JKG)
+VPX = (NSN, SMB)
+GFT = (FPL, MSB)
+DFM = (XKQ, PPQ)
+PPQ = (PCS, BSH)
+JJC = (JHR, RQG)
+JBH = (BDV, QHL)
+KNQ = (KNP, MRL)
+TBS = (NTD, KKG)
+JXL = (RQG, JHR)
+GKL = (MJC, QBM)
+BQR = (LKQ, CJV)
+DGP = (VNT, JRB)
+DKR = (VBJ, GVF)
+JXN = (BXD, XLT)
+TVG = (HGR, GMX)
+XSD = (TLM, KPH)
+RMT = (GXB, DPT)
+FRL = (VVD, GDK)
+PNX = (NCD, KHN)
+VGK = (CNR, XNM)
+MQB = (KSF, LJS)
+KDC = (MSB, FPL)
+GCD = (CXS, PCC)
+XML = (VNT, JRB)
+TBL = (GCV, HDH)
+BRV = (DKK, KNQ)
+JKS = (XXB, ZZZ)
+TMC = (MDQ, QJF)
+TNT = (NQJ, SSM)
+FLF = (XSD, RFG)
+JRB = (FDF, HQC)
+PTL = (DBQ, MVG)
+BGQ = (KFR, HLB)
+XTD = (VRS, BRS)
+QXX = (SJD, CSH)
+FRX = (BQS, GJM)
+PQL = (NCD, KHN)
+LKV = (PNK, DKR)
+HQS = (VVG, XPR)
+VPQ = (NTL, VMQ)
+THR = (CBV, CVR)
+FST = (BQR, XMN)
+DMD = (CVS, QTF)
+HXV = (RCP, TBS)
+STM = (RFX, BFR)
+JTR = (JTL, JXN)
+FLG = (PFQ, CBJ)
+CKM = (KFB, HTP)
+NCT = (KJK, RCJ)
+DKH = (STB, TTB)
+QGA = (CGR, SGM)
+XNQ = (HJM, MLG)
+RGF = (LFN, FGC)
+QBV = (VPJ, RMN)
+QKJ = (KFC, VGK)
+CSB = (FDL, FDL)
+HFK = (DHS, SXC)
+SVP = (NPJ, BTL)
+GGR = (XTG, FLF)
+XKV = (NDH, JXJ)
+BMR = (FRX, DMR)
+VVQ = (BFN, TVK)
+HJM = (RKG, RLS)
+RLK = (PDF, JPB)
+DCX = (HNQ, BRZ)
+TBG = (RTL, SML)
+RMS = (FRL, LSV)
+FCV = (STM, HTC)
+SPR = (TBL, JGG)
+BHP = (LXK, KBL)
+NPJ = (XLV, PQR)
+NKF = (TBD, DKP)
+PDK = (JTK, JTK)
+PFQ = (RBX, JQL)
+LBB = (SVP, HTD)
+GTX = (BLB, PCL)
+SBH = (HTC, STM)
+BFR = (RJN, BTN)
+TCR = (TBL, JGG)
+MQS = (PXX, PLG)
+FRG = (XXB, XXB)
+STX = (XQL, HGM)
+HNJ = (HBN, SVN)
+SSL = (RDL, NST)
+HJS = (QCD, RLF)
+KBL = (SSL, MFR)
+CXS = (RHD, GQR)
+DFD = (NFP, FCC)
+VBJ = (HFK, GLB)
+DKP = (NNB, CQH)
+QSK = (TKX, CQT)
+BNV = (JTK, GTH)
+NBH = (LVX, GQB)
+QBM = (VNC, VPK)
+DBD = (HHR, RVQ)
+DFF = (BPM, CPH)
+LQX = (KJT, XXT)
+FGC = (QKQ, QSK)
+PXM = (CBV, CVR)
+JHQ = (CTB, DCX)
+NJN = (BGQ, FBP)
+TLL = (DDB, QRV)
+XSN = (THS, KJQ)
+KXJ = (QBM, MJC)
+GSC = (TQG, QXX)
+QJP = (PQL, PNX)
+PHH = (MXD, RHN)
+SSC = (NQX, FCH)
+XDF = (NLQ, VCR)
+BRD = (MQV, FRQ)
+AAA = (LRV, HJS)
+PTT = (FFC, HRC)
+VKF = (BFG, TGQ)
+HHA = (FLG, VHN)
+CNR = (TQX, VDV)
+TGM = (FLL, TNV)
+GLT = (DJB, QPL)
+MBK = (NBS, KTV)
+JPB = (JBH, CTX)
+RHP = (SQM, DJP)
+CHF = (CLQ, JGQ)
+FTL = (PRC, RFT)
+SKL = (XTD, GQM)
+RBN = (SPM, VLG)
+HGF = (GXB, DPT)
+BQS = (NSP, BTV)
+XHX = (RHP, QBT)
+CGR = (GXX, FTS)
+BLB = (QJP, FXX)
+CRT = (JLJ, TMN)
+PLG = (SLC, PDD)
+HRV = (FFC, HRC)
+MCM = (JXN, JTL)
+JGH = (MFG, LMS)
+NSP = (KBS, HKH)
+MFR = (NST, RDL)
+GMF = (TVK, BFN)
+SML = (LJL, XFP)
+MPL = (RDS, SRS)
+QHP = (SPM, VLG)
+FCH = (GDC, XRN)
+NRQ = (FTL, JTG)
+HMB = (CRC, FSS)
+KPH = (BNH, SLK)
+SRS = (MQB, GCN)
+RQM = (TGQ, BFG)
+FLN = (CSB, CSB)
+BSH = (LKV, LXX)
+CRC = (KXJ, GKL)
+CJV = (XDF, CHK)
+CGJ = (DGP, XML)
+SFL = (GJJ, HQS)
+PMR = (VPF, GKD)
+QTN = (MMT, MPL)
+KJQ = (RLK, VQJ)
+PBJ = (LFN, FGC)
+BTL = (PQR, XLV)
+SBX = (KFC, VGK)
+QQJ = (PDK, BNV)
+BRZ = (GNF, QQN)
+JTL = (XLT, BXD)
+SKG = (PRV, DBK)
+RQG = (DHN, XRF)
+DRC = (SFC, CHQ)
+TJQ = (NQX, FCH)
+PKS = (TMM, PMR)
+TRP = (GVD, FBL)
+LKQ = (XDF, CHK)
+RTL = (XFP, LJL)
+PPV = (MKN, BLH)
+MTB = (GCG, TMC)
+FPT = (PXF, SBG)
+LDK = (FDN, PFD)
+TND = (PPX, SVK)
+VPK = (NHF, JDX)
+HTP = (NKF, RPV)
+PMS = (SMB, NSN)
+GGG = (XKQ, PPQ)
+DLL = (KKN, QTN)
+JXX = (HHR, RVQ)
+KSF = (QPV, GDQ)
+XQD = (FGK, BNJ)
+RJF = (CSB, KTM)
+GCN = (KSF, LJS)
+JKP = (LML, QDS)
+XFP = (VPX, PMS)
+DPT = (GXT, MNH)
+DKK = (KNP, MRL)
+NKB = (DDK, HNS)
+CJK = (GSC, GBQ)
+NLM = (LDL, JCP)
+VMD = (DFD, XFM)
+NBX = (XJC, CGJ)
+PRS = (NLM, VDR)
+RMQ = (FRG, FRG)
+XNM = (TQX, VDV)
+LJC = (VDR, NLM)
+PHQ = (GJJ, HQS)
+KXN = (KHB, HHL)
+BXD = (CKM, XVL)
+KFB = (NKF, RPV)
+NFS = (PRL, RFL)
+RJN = (SFV, RRG)
+GQM = (VRS, BRS)
+KQH = (VBC, BSJ)
+DNR = (BMR, LJQ)
+HHR = (LPC, SRV)
+DLJ = (MHG, MHG)
+SMB = (RFJ, NJT)
+RHV = (FLL, TNV)
+NTD = (HBX, GVS)
+VNT = (FDF, HQC)
+PRC = (GMF, VVQ)
+FBP = (HLB, KFR)
+KTM = (FDL, LRZ)
+TQP = (QGL, DMD)
+SBM = (QPG, KXN)
+QVK = (CJK, QRL)
+XRF = (RGF, PBJ)
+NDH = (CBT, MMP)
+GVL = (RTL, SML)
+LRZ = (VHN, FLG)
+CQH = (MMF, TNT)
+SLK = (TJQ, SSC)
+QBT = (SQM, DJP)
+FNF = (LLG, BHP)
+STB = (KMS, NRP)
+HVV = (SLG, DGN)
+RFX = (BTN, RJN)
+MKL = (GVM, LVP)
+VDV = (BPK, CFB)
+CBT = (GJX, JGH)
+PPX = (HVH, HNJ)
+NQJ = (TMT, NTC)
+MJH = (MHP, XQT)
+LTA = (KLS, BFV)
+CSH = (BXQ, GHF)
+HTK = (XTG, FLF)
+VNC = (JDX, NHF)
+BFG = (MRC, NKK)
+KKG = (GVS, HBX)
+PNK = (GVF, VBJ)
+XXB = (LRV, HJS)
+DVF = (TBS, RCP)
+PNR = (NCJ, QQV)
+QKQ = (CQT, TKX)
+TTR = (SPL, DKH)
+BTN = (RRG, SFV)
+VLM = (PHH, SFH)
+TQG = (SJD, CSH)
+MHP = (LQX, HNT)
+NQX = (GDC, XRN)
+TQX = (BPK, CFB)
+TVB = (LHR, SMV)
+MBQ = (XQL, HGM)
+HXJ = (MQS, NFX)
+DHN = (PBJ, RGF)
+BFN = (MKG, NKB)
+PVR = (JXJ, NDH)
+QRL = (GBQ, GSC)
+GJM = (NSP, BTV)
+KQV = (NHH, CQK)
+KNP = (TKS, PKS)
+PDD = (FND, JKP)
+GXT = (VKF, RQM)
+XDC = (FTL, JTG)
+MMF = (SSM, NQJ)
+BFV = (CHF, NHG)
+DHS = (PHX, PHX)
+VXC = (PQH, TFJ)
+XLV = (TLL, RVS)
+PXX = (SLC, PDD)
+GVD = (DRC, DRC)
+THS = (VQJ, RLK)
+DBK = (PGC, NSK)
+KHB = (PHC, QQJ)
+TKS = (PMR, TMM)
+SVR = (NJN, TFP)
+HNQ = (QQN, GNF)
+MKN = (GGG, DFM)
+KRP = (NFM, NFC)
+SHM = (XBQ, DLL)
+NTL = (NCT, DFB)
+NRK = (QVK, FLR)
+HXL = (DSX, DSX)
+KSB = (XKV, PVR)
+NKK = (BKF, QMJ)
+MHG = (KLS, BFV)
+PNP = (XBR, QHN)
+CLQ = (TPX, NMV)
+RSG = (XDC, NRQ)
+BPM = (PCQ, QKX)
+PHC = (PDK, BNV)
+TNR = (KJV, QGC)
+XQL = (VPV, SVR)
+MHV = (QTS, RSG)
+XBR = (THC, JHT)
+BDX = (PHH, SFH)
+TBR = (CXV, SGD)
+RVQ = (SRV, LPC)
+NFM = (PKQ, MDK)
+FBL = (DRC, QSZ)
+TLM = (BNH, SLK)
+NHH = (SKS, GPP)
+FKF = (RMN, VPJ)
+XVL = (HTP, KFB)
+NHG = (CLQ, JGQ)
+FGK = (NBH, KBX)
+VMQ = (DFB, NCT)
+LXX = (DKR, PNK)
+SMJ = (QGB, NFS)
+LVP = (KDC, GFT)
+QGB = (PRL, RFL)
+BRX = (BNJ, FGK)
+BDV = (MRF, RXX)
+SJM = (BMR, LJQ)
+GBQ = (TQG, QXX)
+JXR = (XJT, CVX)
+TMN = (XSN, PQM)
+CQT = (LGM, JMT)
+CPG = (QHP, RBN)
+BKZ = (BFV, KLS)
+VVR = (HTK, GGR)
+XFM = (NFP, FCC)
+CVH = (GJV, HVV)
+VPS = (XQT, MHP)
+MDJ = (QHJ, MFT)
+SNF = (QTS, RSG)
+NKQ = (HMB, JVX)
+PRL = (FNF, VXB)
+CMN = (MLG, HJM)
+JQL = (NKQ, CNV)
+QSZ = (CHQ, SFC)
+HLR = (MHV, SNF)
+RDL = (TBG, GVL)
+GVM = (KDC, GFT)
+KTV = (CKK, VBK)
+SLC = (JKP, FND)
+QHL = (MRF, RXX)
+KKN = (MPL, MMT)
+TNV = (HKP, GTX)
+QMJ = (TVG, JCF)
+BSJ = (NFV, FST)
+BNJ = (NBH, KBX)
+XXQ = (GCD, CMQ)
+TGQ = (NKK, MRC)
+SVH = (NFC, NFM)
+LQB = (FRG, JKS)
+GNF = (HRV, PTT)
+PFV = (CVX, XJT)
+JTK = (DLJ, DLJ)
+KSP = (LVP, GVM)
+PFD = (TBR, QDT)
+MLT = (KSQ, KKJ)
+GVF = (HFK, GLB)
+JLS = (PPX, SVK)
+TBK = (CMQ, GCD)
+LJB = (QHJ, MFT)
+KSQ = (PST, TQP)
+SXC = (PHX, TRP)
+TTB = (NRP, KMS)
+VBX = (MHV, SNF)
+CXV = (PNR, HTT)
+XCT = (NFS, QGB)
+JBD = (KRP, SVH)
+JDX = (HRS, VXC)
+BNH = (TJQ, SSC)
+HQD = (RBN, QHP)
+RXX = (NKP, JKG)
+NTC = (NND, PNP)
+QTF = (TVQ, MHR)
+JND = (FCV, SBH)
+RDS = (MQB, GCN)
+FDL = (FLG, VHN)
+TGJ = (SFL, PHQ)
+KBX = (GQB, LVX)
+GQR = (TMD, KQH)
+LMS = (JBD, GSM)
+VPJ = (SMJ, XCT)
+LVQ = (HXL, VNK)
+GDK = (QBV, FKF)
+KCD = (PXM, THR)
+JGG = (GCV, HDH)
+NFP = (BRK, GLT)
+SFV = (TBK, XXQ)
+KJK = (QKN, XPD)
+CVX = (SBX, QKJ)
+GCG = (QJF, MDQ)
+FNB = (VFV, VPQ)
+CBV = (STX, MBQ)
+PNH = (QPG, KXN)
+HFC = (GSJ, RDT)
+GHF = (FLN, RJF)
+CKK = (BRV, DKG)
+LFN = (QKQ, QSK)
+MNH = (VKF, RQM)
+MMP = (GJX, JGH)
+HVB = (SSG, TNR)
+TMD = (BSJ, VBC)
+QTS = (NRQ, XDC)
+TVQ = (PTN, HVB)
+HTT = (QQV, NCJ)
+PQM = (KJQ, THS)
+XJT = (QKJ, SBX)
+PST = (QGL, DMD)
+XXT = (MBD, KQV)
+PCL = (QJP, FXX)
+MJC = (VPK, VNC)
+QPV = (JLS, TND)
+JLJ = (PQM, XSN)
+BKF = (TVG, JCF)
+SFT = (FRQ, MQV)
+XGJ = (HXL, HXL)
+JSF = (KKJ, KSQ)
+RMN = (XCT, SMJ)
+RPV = (TBD, DKP)
+XLT = (CKM, XVL)
+DJB = (CMN, XNQ)
+KCK = (GVB, RMS)
+LLT = (VFV, VPQ)
+CVS = (MHR, TVQ)
+NBS = (VBK, CKK)
+LJQ = (DMR, FRX)
+HKS = (TGM, RHV)
+HTC = (BFR, RFX)
+LDL = (VMD, SSP)
+QRV = (HXV, DVF)
+NST = (TBG, GVL)
+GQB = (JSF, MLT)
+KJT = (MBD, KQV)
+GSJ = (SVQ, JTT)
+FDX = (TVB, GXP)
+SSP = (XFM, DFD)
+FRQ = (LDK, HBD)
+JLR = (HTD, SVP)
+HNS = (SPR, TCR)
+MCZ = (SGM, CGR)
+GCV = (VPS, MJH)
+MDQ = (JJC, JXL)
+RKG = (NHX, CRT)
+TMT = (NND, PNP)
+SFC = (KSB, CXF)
+CQK = (SKS, GPP)
+FND = (LML, QDS)
+HVH = (HBN, SVN)
+CNV = (HMB, JVX)
+CMQ = (CXS, PCC)
+NLQ = (JTR, MCM)
+GDC = (RMQ, RMQ)
+PHX = (GVD, GVD)
+NKP = (HXJ, MGF)
+RRG = (XXQ, TBK)
+TFP = (BGQ, FBP)
+GXX = (LJB, MDJ)
\ No newline at end of file
diff --git a/9/9-1.py b/9/9-1.py
new file mode 100644
index 0000000..fd41bd0
--- /dev/null
+++ b/9/9-1.py
@@ -0,0 +1,58 @@
+def get_input():
+    with open("nine.txt", "r") as f:
+        return f.read().splitlines()
+
+
+def get_next_line(line):
+    next_ = []
+    for i, n in enumerate(line):
+        if i == len(line) - 1:
+            return next_
+        next_.append(int(line[i + 1]) - int(n))
+
+
+def extrapolate(line):
+    """
+    "1 3 6 10 15"
+    =>
+    [
+        [1, 3, 6, 10, 15],
+        [2, 3, 4, 5],
+        [1, 1, 1],
+        [0, 0]
+    ]
+    """
+    l = line.split(" ")
+    lines = [[int(i) for i in l]]
+    while not all([n == 0 for n in l]):
+        l = get_next_line(l)
+        lines.append(l)
+    return lines
+
+
+def expand_line(line):
+    prev = 0
+    for l in reversed(line):
+        l.append(prev + l[-1])
+        prev = l[-1]
+    return line
+
+
+def sum_expanded(expanded):
+    sum = 0
+    for e in expanded:
+        sum += e[0][-1]
+    return sum
+
+
+def main():
+    input = get_input()
+    extrapolated = [extrapolate(l) for l in input]
+    expanded = [expand_line(l) for l in extrapolated]
+    total = sum_expanded(expanded)
+    print(total)
+
+
+main()
+
+# 1782868781
diff --git a/9/9-2.py b/9/9-2.py
new file mode 100644
index 0000000..54d35bf
--- /dev/null
+++ b/9/9-2.py
@@ -0,0 +1,58 @@
+def get_input():
+    with open("nine.txt", "r") as f:
+        return f.read().splitlines()
+
+
+def get_next_line(line):
+    next_ = []
+    for i, n in enumerate(line):
+        if i == len(line) - 1:
+            return next_
+        next_.append(int(line[i + 1]) - int(n))
+
+
+def extrapolate(line):
+    """
+    "1 3 6 10 15"
+    =>
+    [
+        [1, 3, 6, 10, 15],
+        [2, 3, 4, 5],
+        [1, 1, 1],
+        [0, 0]
+    ]
+    """
+    l = line.split(" ")
+    lines = [[int(i) for i in l]]
+    while not all([n == 0 for n in l]):
+        l = get_next_line(l)
+        lines.append(l)
+    return lines
+
+
+def expand_line(line):
+    prev = 0
+    for l in reversed(line):
+        l.insert(0, l[0] - prev)
+        prev = l[0]
+    return line
+
+
+def sum_expanded(expanded):
+    sum = 0
+    for e in expanded:
+        sum += e[0][0]
+    return sum
+
+
+def main():
+    input = get_input()
+    extrapolated = [extrapolate(l) for l in input]
+    expanded = [expand_line(l) for l in extrapolated]
+    total = sum_expanded(expanded)
+    print(total)
+
+
+main()
+
+# 1057
\ No newline at end of file
diff --git a/9/9-test.txt b/9/9-test.txt
new file mode 100644
index 0000000..70c5595
--- /dev/null
+++ b/9/9-test.txt
@@ -0,0 +1,3 @@
+0 3 6 9 12 15
+1 3 6 10 15 21
+10 13 16 21 30 45
\ No newline at end of file
diff --git a/9/9.txt b/9/9.txt
new file mode 100644
index 0000000..0da59e2
--- /dev/null
+++ b/9/9.txt
@@ -0,0 +1,200 @@
+13 31 64 123 233 435 798 1465 2767 5449 11062 22585 45351 88361 166080 300819 525817 889147 1458580 2327551 3622381
+5 11 27 54 98 187 407 965 2292 5227 11396 24048 49871 102731 210910 430327 867479 1717515 3325041 6278042 11548800
+-8 -14 -13 -2 19 63 186 531 1386 3256 6949 13676 25165 43789 72708 116025 178956 268014 391207 558250 780791
+27 38 47 54 59 62 63 62 59 54 47 38 27 14 -1 -18 -37 -58 -81 -106 -133
+13 32 54 87 148 275 551 1133 2277 4349 7823 13309 21761 35269 59447 109865 228203 520599 1243968 2990366 7060964
+10 23 42 62 78 85 78 52 2 -77 -190 -342 -538 -783 -1082 -1440 -1862 -2353 -2918 -3562 -4290
+17 40 73 131 249 502 1055 2267 4883 10365 21449 43091 84109 160077 298453 547712 993875 1791324 3222271 5814549 10577055
+20 39 67 115 212 409 788 1479 2686 4732 8174 14147 25321 48259 98614 211560 461156 993993 2084409 4220623 8233062
+21 29 42 79 171 361 704 1267 2129 3381 5126 7479 10567 14529 19516 25691 33229 42317 53154 65951 80931
+14 39 84 169 328 609 1074 1799 2874 4403 6504 9309 12964 17629 23478 30699 39494 50079 62684 77553 94944
+21 41 85 174 344 655 1202 2137 3731 6547 11879 22762 46105 96902 206177 435649 904757 1840988 3674747 7219223 14010166
+11 25 59 117 198 293 377 388 181 -559 -2465 -6721 -15408 -31995 -62011 -113938 -200369 -339479 -556861 -887783 -1379926
+3 5 9 25 77 203 455 899 1615 2697 4253 6405 9289 13055 17867 23903 31355 40429 51345 64337 79653
+12 14 7 -9 -24 -6 113 452 1203 2672 5354 10053 18037 31160 51754 81842 120774 159642 169657 79907 -262642
+1 6 27 76 171 336 601 1002 1581 2386 3471 4896 6727 9036 11901 15406 19641 24702 30691 37716 45891
+5 4 -1 -11 -17 17 185 693 1955 4778 10746 23032 48077 98947 201864 408735 821203 1637394 3244403 6404069 12628677
+9 21 44 90 186 382 768 1515 2965 5812 11443 22544 44129 85262 162023 302942 559599 1028105 1893128 3517688 6624314
+6 8 22 56 113 200 349 665 1443 3442 8489 20744 49236 112742 248802 529733 1090028 2171620 4196288 7878128 14393667
+10 6 0 -9 -17 -3 94 430 1384 3829 9653 22684 50245 105711 212793 413161 781189 1454703 2702133 5071680 9721774
+21 27 31 33 46 112 323 847 1959 4077 7803 13969 23688 38410 59983 90719 133465 191679 269511 371889 504610
+10 12 15 29 68 158 352 751 1540 3064 5987 11593 22298 42442 79416 145147 257910 444356 741535 1198549 1877288
+20 25 38 83 198 431 833 1453 2360 3757 6317 11966 25468 57337 128816 279928 581924 1155833 2199264 4024125 7108514
+-2 4 20 46 82 128 184 250 326 412 508 614 730 856 992 1138 1294 1460 1636 1822 2018
+13 29 58 100 155 223 304 398 505 625 758 904 1063 1235 1420 1618 1829 2053 2290 2540 2803
+4 -4 -4 19 92 270 656 1423 2844 5365 9824 18043 34218 67832 139272 290046 600652 1221046 2421748 4678583 8811816
+11 24 44 80 146 261 449 739 1165 1766 2586 3674 5084 6875 9111 11861 15199 19204 23960 29556 36086
+8 1 -5 -2 17 55 108 162 190 149 -23 -410 -1121 -2293 -4094 -6726 -10428 -15479 -22201 -30962 -42179
+4 5 20 59 136 290 623 1360 2936 6115 12146 22961 41420 71608 119189 191822 299644 455825 677200 984983 1405568
+21 42 67 106 187 365 737 1466 2817 5208 9279 15982 26695 43363 68669 106238 160877 238854 348219 499170 704467
+-6 4 23 41 40 4 -57 -68 173 1110 3672 9795 23489 52878 113858 236298 474060 920544 1731981 3161309 5606182
+16 20 23 22 18 22 63 202 571 1496 3836 9790 24619 60050 140654 315338 677426 1398844 2786949 5376902 10078608
+29 55 91 133 184 267 451 906 2018 4615 10372 22465 46510 91717 171969 306214 517375 829799 1269309 1882093 2818648
+-1 -2 11 56 167 416 945 2016 4092 7959 14896 26915 47162 80779 137081 235250 418803 790622 1593665 3388706 7430499
+15 22 32 44 71 155 399 1042 2630 6389 15008 34221 75869 163555 342598 696754 1375093 2633468 4896124 8844078 15537823
+11 15 33 72 139 241 385 578 827 1139 1521 1980 2523 3157 3889 4726 5675 6743 7937 9264 10731
+1 9 31 84 194 405 808 1597 3163 6250 12219 23497 44328 81992 148716 264568 461701 790399 1327471 2187642 3538702
+19 41 73 115 167 229 301 383 475 577 689 811 943 1085 1237 1399 1571 1753 1945 2147 2359
+-2 0 12 43 102 198 340 537 798 1132 1548 2055 2662 3378 4212 5173 6270 7512 8908 10467 12198
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