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

#ifdef _RUTHEN
#include <debug.hpp>
#else
#define show(...) true
#endif

using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); i++)
template <class T> using V = vector<T>;

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