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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int NUM_ROUNDS = 100000000;
  5.  
  6. int main() {
  7. 	int tot = 0;
  8. 	for(int test = 0; test <= NUM_ROUNDS; test++){
  9. 		int cards = 1;
  10. 		for(int round = 1;; round++){
  11. 			int ncards = 0;
  12. 			for(int i = 0; i < cards; i++){
  13. 				if(rand() % 4 == 0){
  14. 					ncards += 2;
  15. 				}
  16. 			}
  17. 			if(ncards == 0){
  18. 				tot += round;
  19. 				break;
  20. 			} else {
  21. 				cards = ncards;
  22. 			}
  23. 		}
  24. 	}
  25. 	cout << (double)tot / NUM_ROUNDS;
  26. }
Success #stdin #stdout 1.99s 4408KB
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Standard input is empty
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1.46105
https://ideone.com/MbP5B9
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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