Cod sursa(job #731371)
#include <cstdio>
#include <math.h>
using namespace std;
int cmmdc(int a,int b){
int r;
while(b){
r=a%b;
a=b;
b=r;
}
return a;
}
int main()
{
freopen("file.in","r",stdin);
freopen("file.out","w",stdout);
//---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
int a,b,t;
scanf("%d",&t);
for(int i = 1; i<=t; i++)
{
scanf("%d %d",&a,&b);
printf("%d\n",cmmdc(a,b));
}
//---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
fclose(stdin);
fclose(stdout);
return 0;
}