#include <bits/stdc++.h>
using namespace std;
int A, B;
int main() {
	cin >> A >> B;
	int ret = 0;
	for(int i = -10009; i <= 10009; i++) {
		if(A * i == B) ret = i;
	}
	if(ret == 0) cout << "NO" << endl;
	else cout << ret << endl;
	return 0;
}