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OI-codes/AcWing/872/872.cpp

19 lines
265 B
C++

#include <bits/stdc++.h>
using namespace std;
int gcd(int a, int b) {
if (!b) return a;
return gcd(b, a % b);
}
int main() {
int n, a, b;
cin >> n;
while (n--) {
cin >> a >> b;
cout << gcd(a, b) << endl;
}
return 0;
}