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  1. #include <iostream>
  2. #include <random>
  3. #include <cstdint>
  4. #include <limits>
  5.  
  6. int AboutX(std::uint32_t X, std::uint32_t A){
  7. 	if (A > X)return 1;
  8. 	if (A < X) return -1;
  9. 	return 0;
  10. }
  11.  
  12. std::uint32_t BinarySearch(std::uint32_t X, std::uint32_t Add, int Judge){
  13. 	if (Add == 0) Add = 1;
  14. 	if (Judge == 1) return X + Add;
  15. 	if (Judge == -1) return X - Add;
  16. 	return X;
  17. }
  18.  
  19. int main(){
  20. 	std::random_device rd;
  21. 	std::mt19937 mt(rd());
  22. 	std::uniform_int_distribution<std::uint32_t> uid;
  23.  
  24. 	std::uint32_t X = std::numeric_limits<std::uint32_t>::max();
  25. 	std::uint32_t Add = X;
  26. 	std::uint32_t A = uid(mt);
  27. 	int i = 0;
  28. 	int Judge = -1;
  29. 	do{
  30. 		Add /= 2;
  31. 		X = BinarySearch(X, Add, Judge);
  32. 		Judge = AboutX(X, A);
  33. 		i++;
  34. 	} while (Judge != 0);
  35.  
  36. 	std::cout << "X=>" << X << ',' << "Answer=>" << A << ' ' << std::endl << "Search for "<<i<<" Count!" << std::endl<< "this is " << ((A == X) ? "Valid" : "Invalid") << std::endl;
  37.  
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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X=>1067887816,Answer=>1067887816 
Search for 31 Count!
this is Valid
https://ideone.com/1IiTrt
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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