#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B; cin >> A >> B;
  for(int i = -100; i <= 100; i++){
    if(i == 0) continue;
    if(A*i == B){
      cout << i << endl;
      return 0;
    }
  }
  cout << "NO" << endl;
}