func_code_string: #include <bits/stdc++.h>   using namespace std;   long long k, b, n, t;   int main() {     cin >> k >> b >> n >> t;     int temp = 0;     long long acc = 1;     while (acc <= t) {       acc *= k;       acc += b;       temp++;     }     int ans = n - temp + 1;     if (ans < 0)       cout << 0 << endl;     else       cout << ans << endl;   }   