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#include <iostream>
#include <fstream>
using namespace std;
long n,m, max_sum, mat[100][100], l[100];
bool sol(int k){
return (k == n-1);
}
void backt(int k){
for(int i = 0; i < 2; i++){
l[k] = i;
if(sol(k)){
long sum = 0;
for(int j = 0; j < m; j++){
long s =0;
for(int p = 0; p < n; p++)
if(l[p] == 0)
s -= mat[p][j];
else s += mat[p][j];
if(s < 0)
sum -= s;
else sum += s;
}
if(sum >= max_sum)
max_sum= sum;
}
else
backt(k+1);
}
}
int gcd(int a, int b){
return (b != 0) ? gcd(b, a % b) : a;
}
int a, b;
int main()
{
ifstream in("euclid2.in");
ofstream out("euclid2.out");
in >> n ;
for(int i = 0; i < n; i++){
in >> a >> b;
out << gcd(a,b) << endl;
}
}