func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, k, x;     while (cin >> n >> k) {       long long sum = 0;       x = n * (k - 1) / k - 10;       if (x <= 0) {         x = 1;       }       long long c = x;       sum = x;       while (sum < n) {         c /= k;         sum += c;         if (sum >= n) {           break;         }         if (c / k == 0 && sum < n) {           x++;           c = x;           sum = c;         }       }       cout << x << endl;     }     return 0;   }   