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Cod sursa(job #553867)
#include<iostream.h>
#include<fstream.h>
long long n,t,y;
long long divi(long long r,long long a,long long b)
{
if(r==0) return b;
else return divi(a%b,b,r);
}
int main()
{
ifstream f;
f.open("euclid2.in");
ofstream g;
g.open("euclid2.out");
f>>n;
for(int i=1;i<=n;i++)
{
f>>t>>y;
g<<divi(t%y,t,y)<<endl;
}
f.close();
g.close();
return 1;
}