A Dividing Problem

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Points: 5
Time limit: 1.0s
Memory limit: 64M

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Problem types

Given an array a, print the largest positive number that divides all the elements in a.

Input Specification

The first line will contain the integer N\ (1 \le N \le 100).

The second line will contain N integers, a_1, a_2, \ldots, a_N\ (1 \le a_i \le 10^9).

Output Specification

Print the largest positive number that divides all elements in a.

Sample Input

3
30 5 10

Sample Output

5

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