#include <fstream>
using namespace std;

ifstream fin ("euclid2.in");
ofstream fout ("euclid2.out");

int cmmdc (int a, int b) {
    while (b) {
        int r = a%b;
        a = b;
        b = r;
    }

    return a;
}

int main()
{
    int T;

    fin >> T;

    while (T) {
        long long a, b;
        fout << cmmdc(a, b) << '\n';
        T--;
    }

    return 0;
}