#include<bits/stdc++.h>
using namespace std;
typedef long long LL;

struct cww{cww(){
    ios::sync_with_stdio(false);cin.tie(0);
}}star;
#define fin "\n"
#define FOR(i,bg,ed) for(int i=(bg);i<(ed);i++)
#define REP(i,n) FOR(i,0,n)
#define fi first
#define se second
#define pb push_back
#define DEBUG if(0)
template <typename T>inline void chmin(T &l,T r){l=min(l,r);}
template <typename T>inline void chmax(T &l,T r){l=max(l,r);}
template <typename T>
istream& operator>>(istream &is,vector<T> &v){
    for(auto &it:v)is>>it;
    return is;
}
    
int main(){
    int a,b;
    cin>>a>>b;
    int res=0;
    FOR(x,-300,300)if(a*x==b)res=x;
    if(res)cout<<res<<endl;else cout<<"NO"<<endl;
    return 0;
}