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Cod sursa(job #155968)
#include <fstream>
using namespace std;
int Euclid(int a, int b)
{
if (!b) return a;
return Euclid(b, a%b);
}
int main()
{
int T, i, x1, x2;
ifstream fin("euclid2.in");
ofstream fout("euclid2.out");
fin >> T;
for (i = 1; i <= T; i++)
{
fin >> x1 >> x2;
if (x1 < x2) swap(x1, x2);
fout << Euclid(x1, x2) << "\n";
}
fin.close();
fout.close();
}