python/GESP/20231201.cpp

// https://www.luogu.com.cn/problem/solution/B3925
#include <iostream>
using namespace std;
int main() {
    long long n, i, j, k;
    cin >> n >> i;
    for (j = 1;; j++) {
        bool flag = true;
        long long ans = j * n + i;
        for (k = 1; k < n; k++) {
            if (ans % (n - 1)) {
                flag = false;
                break;
            }
            ans = ans / (n - 1) * n + i;
        }
        if (flag) {
            cout << ans;
            return 0;
        }
    }
}