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Cod sursa(job #927360)
#include <cstdio>
using namespace std;
int T;
int Euclid(int a, int b)
{
if (!b) return a;
return Euclid(b, a % b);
}
int main()
{
freopen("euclid2.in", "r", stdin);
freopen("euclid2.out", "w", stdout);
scanf("%d", &T);
int a, b;
for (int i = 0; i < T; i++)
{
scanf("%d %d", &a, &b);
printf("%d\n", Euclid(a, b));
}
return 0;
}