#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
using ll=long long;
using ld=long double;
ld pie=3.141592653589793;
ll mod=1000000007;
ll inf=1000;
int main(){
    ll a,b;
    cin >> a >> b;
    if (a==0)
    {
        if (b==0)
        {
            cout << 1 << endl;
        }else{
            cout << "NO" << endl;
        }
    }else{
        if (b%a==0)
        {
            cout << b/a << endl;
        }else{
            cout << "NO" << endl;
        }
        
    }
}