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  1. #include <iostream>
  2. #include <string>
  3. #include <cmath>
  4.  
  5. int main() {
  6.  
  7. 	constexpr size_t message_char_limit = 1000;
  8.  
  9. 	std::ios_base::sync_with_stdio(false);
  10. 	std::cin.tie(nullptr);
  11.  
  12. 	unsigned short N;
  13. 	std::cin >> N;
  14. 	std::cin.ignore();
  15.  
  16. 	for (unsigned short i{ 0 }; i < N; ++i)
  17. 	{
  18. 		std::string message;
  19. 		message.reserve(message_char_limit);
  20. 		std::getline(std::cin, message);
  21. 		//std::cin.ignore();
  22.  
  23. 		unsigned short L = message.size();
  24. 		unsigned short M = L;
  25. //		double sqertewt = std::floor(sqrt(M));
  26. 		while (std::floor(sqrt(M)) * std::floor(sqrt(M)) != M)
  27. 		{
  28. 			++M;
  29. 		}
  30.  
  31. 		//message.append(M - L, '*');
  32. 		size_t sqrtM = sqrt(M);
  33.  
  34. 		for (short j{ 0}; j < sqrtM; ++j)
  35. 		{
  36. 			for (size_t k{ 1 }; k <= sqrtM; ++k)
  37. 			{
  38. 				int idx = M - k*sqrtM + j;
  39. 				if (M - k*sqrtM + j < L)
  40. 					std::cout << message[M - k*sqrtM + j];
  41. 			}
  42. 		}
  43. 		std::cout << "\n";
  44. 	}
  45.  
  46.  
  47. 	return 0;
  48. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/IUwC4G
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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