#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll A, B;
    cin >> A >> B;
    if(A == 1)cout << 0 << '\n';
    else cout << -B / (A - 1) << '\n';
}