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  1. #include <iostream>
  2. #include <random>
  3. #include <cstdint>
  4. #include <tuple>
  5. #include <algorithm>
  6.  
  7. //計算機以外での実行を禁ずる。
  8. std::size_t DoOne(std::size_t N, std::size_t C) {
  9. 	std::size_t V = 0;
  10. 	std::size_t Re = N;
  11. 	std::size_t T = 0;
  12.  
  13. 	std::random_device rd;
  14. 	std::mt19937 mt(rd());
  15. 	//std::mt19937 mt;
  16. 	std::uniform_int_distribution<std::size_t> UI(1, 10);
  17. 	do {
  18. 		N = Re;
  19. 		Re = 0;
  20. 		T = 0;
  21. 		for (std::size_t i = 0; i < N; i++) {
  22. 			T = std::max(T,UI(mt));
  23.  
  24. 			if (T >= C) { Re++; }
  25.  
  26. 		}
  27. 		V += T;
  28. 	}while(Re != 0);
  29.  
  30. 	return V;
  31. }
  32.  
  33. int main() {
  34. 	std::uintmax_t V = 0;
  35.  
  36. 	std::size_t DiceCount = 10;
  37. 	std::size_t NumberLimit = 5;
  38. 	std::size_t L = 900000;
  39. 	for (std::size_t i = 0; i < L; i++) {
  40. 		V += DoOne(DiceCount, NumberLimit);
  41. 	}
  42.  
  43. 	std::cout << "Do " << L << " count." << "Average:" << V / (double)L << std::endl;
  44.  
  45. 	return 0;
  46. }
  47.  
Success #stdin #stdout 4.98s 4532KB
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Standard input is empty
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Do 900000 count.Average:135.982
https://ideone.com/GgQh2t
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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