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Cod sursa(job #263213)
#include <iostream>
#include <fstream>
#include <conio.h>
using namespace std;
int gcd(int u, int v){
if (v==0) return u;
else return gcd(v,u%v);
}
int main(){
ifstream f("euclid2.in");
ofstream g("euclid2.out");
int n, nr = 0;
long u, v;
f>>n;
for (int i = 0;i<n;i++){
f>>u>>v;
g<<gcd(u,v)<<endl;
}
f.close();
g.close();
return 0;
}