Open
Description
Given N positive numbers, your task is to calculate their HCF.
Input Format
First line of input contains a single integer N, second line contains N space separated positive integers whose HCF is to be computed.
Constraints
N <= 10 and all the numbers lie between 1 and 100.
Output Format
Print HCF of N numbers.
Sample Input
3
2 4 6
Sample Output
2