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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5. int main()
  6. {
  7. #ifndef ONLINE_JUDGE
  8.     freopen("input.txt", "r", stdin);
  9.     freopen("output.txt", "w", stdout);
  10.     freopen("errors.txt", "w", stderr);
  11. #endif
  12.     double n ; int k ;
  13.     cin >> n >> k ;
  14.     if(n <= k) {
  15.         cout << n ; return 0 ;
  16.     }
  17.     int i = n * (1 - (1.0/k)) ;
  18.     bool flag =1 ;
  19.     int v=0 ;
  20.     while(flag) {
  21.         int p =0 ;
  22.         double x = 1 ;
  23.         double sum =0 ;
  24.         while(i >= x) {
  25.             sum += (i / x) ;
  26.             if(sum >= n) {
  27.                 v = i ;
  28.                 flag =0 ;
  29.             }
  30.             x *= k ;
  31.         }
  32.         i++;
  33.     }
  34.     cout << v ;
  35. }
  36.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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6.95292e-310
https://ideone.com/VaOHv8
language:
C++ (gcc 8.3)
created:
12 days ago
visibility:
public

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