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  1. #include <bits/stdc++.h>
  2. int main() {
  3.     int p = 0, q = 0;
  4.     for (int i = 1; i <= 52; i++) {
  5.         for (int j = 1; j <= 52; j++) {
  6.             if (i == j) { continue; }
  7.             for (int k = 1; k <= 52; k++) {
  8.                 if (k == i || k == j) { continue; }
  9.                 for (int t = 1; t <= 52; t++) {
  10.                     if (t == i || t == j || t == k) { continue; }
  11.                     for (int l = 1; l <= 52; l++) {
  12.                         if (l == t || l == k || l == i || l == j) { continue; }
  13.                         int res = !(i % 13)+!(j % 13)+!(k % 13)+!(t % 13)+!(l % 13);
  14.                         p += res;
  15.                         q++;
  16.                     }
  17.                 }
  18.             }
  19.         }
  20.     }
  21.     std::cout << "answer for 5 cards is "
  22.         << p / std::__gcd(p,q) << "/" 
  23.         << q / std::__gcd(p,q) << std::endl;
  24.     return 0;
  25. }
Success #stdin #stdout 0.79s 15232KB
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Standard input is empty
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answer for 5 cards is 5/13
https://ideone.com/lxtTAf
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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