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  1. #include <iostream>
  2. #include <array>
  3. #include <vector>
  4. #include <ctime>
  5. #include <algorithm>
  6.  
  7. const size_t COL = 6;
  8. const size_t ROW = 7;
  9. using Matrix = std::array<std::array<int, COL>, ROW>;
  10.  
  11. int main() {
  12. 	Matrix mask = {{
  13. 		{ { 0, 0, 0, 0, 0, 0 } },
  14. 		{ { 0, 0, 0, 0, 0, 1 } },
  15. 		{ { 0, 0, 0, 0, 1, 0 } },
  16. 		{ { 1, 1, 1, 1, 0, 0 } },
  17. 		{ { 0, 0, 0, 0, 1, 0 } },
  18. 		{ { 0, 0, 0, 0, 0, 1 } },
  19. 		{ { 0, 0, 0, 0, 0, 0 } }
  20. 	}};
  21.  
  22. 	Matrix arr;
  23. 	std::srand(std::time(0));
  24. 	for (auto &i : arr) {
  25. 		std::generate(i.begin(), i.end(), []() { return std::rand() % 10; });
  26. 	}
  27.  
  28. 	for (auto i : arr) {
  29. 		for (auto j : i) {
  30. 			std::cout << j << " ";
  31. 		}
  32. 		std::cout << std::endl;
  33. 	}
  34.  
  35. 	std::vector<int> data;
  36. 	for (int i = 0; i < ROW; i++) {
  37. 		for (int j = 0; j < COL; j++) {
  38. 			if (mask[i][j] != 0 && arr[i][j] % 2 == 0) {
  39. 				data.push_back(arr[i][j]);
  40. 			}
  41. 		}
  42. 	}
  43.  
  44. 	if (data.empty()) {
  45. 		std::cout << "No elements" << std::endl;
  46. 	} else {
  47. 		std::cout << "Max element = " << *std::max_element(data.begin(), data.end()) << std::endl;
  48. 	}
  49. }
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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7 5 8 5 8 5 
4 1 4 6 6 0 
9 0 9 5 6 9 
6 8 0 0 9 6 
0 9 2 8 6 7 
8 3 4 8 1 4 
3 5 6 7 3 4 
Max element = 8
https://ideone.com/zCfqHy
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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