#include <bits/stdc++.h>
using namespace std;
int gcd(int a, int b) {
  if (b == 0)
    return a;
  else
    return gcd(b, a % b);
}
int main(void) {
  int t;
  cin >> t;
  while (t--) {
    int a, b;
    cin >> a >> b;
    if (gcd(a, b) == 1)
      cout << "finite\n";
    else
      cout << "infinite\n";
  }
}
