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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int x, y;
  6. 	cin >> x >> y;
  7. 	bool **mas = new bool*[x];
  8. 	for (int i = 0; i < x; ++i){
  9. 		mas[i] = new bool[y];
  10. 	}
  11. 	for (int i = 0; i < x; ++i){
  12. 		for (int j = 0; j < y; ++j){
  13. 			char buff;
  14. 			cin >> buff;
  15. 			if (buff == '.') mas[i][j] = true; 
  16. 			else mas[i][j] = false;
  17. 		}
  18. 		cout << endl;
  19. 	}
  20. 	int sum = 0;
  21. 	for (int i = 0; i < x; ++i){
  22. 		for (int j = 0; j < y; ++j){
  23. 			if (mas[i][j]){
  24. 				if (i - 1 >= 0 && j - 1 >= 0) if (mas[i - 1][j] && mas[i][j - 1])  ++sum;
  25. 				if (i - 1 >= 0 && j + 1 < y) if (mas[i - 1][j] && mas[i][j + 1])  ++sum; 
  26. 				if (i + 1 < x && j + 1 < y) if (mas[i + 1][j] && mas[i][j + 1])  ++sum; 
  27. 				if (i + 1 < x && j - 1 >= 0) if (mas[i + 1][j] && mas[i][j - 1])  ++sum; 
  28. 			}
  29. 		}
  30. 	}
  31. 	cout << sum;
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 4280KB
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https://ideone.com/zOuGEw
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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