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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10.  
  11. 		int x, y;
  12. 		x = in.nextInt();
  13. 		y = in.nextInt();
  14. 		boolean[][] mas = new boolean[x][y];
  15. 		for (int i = 0; i < x; ++i){
  16. 			for (int j = 0; j < y; ++j){
  17. 				char buff;
  18. 				in.useDelimiter("");
  19. 				buff = in.next().charAt(0);
  20. 				if (buff == '.') mas[i][j] = true; 
  21. 				else mas[i][j] = false;
  22. 			}
  23.  
  24. 		}
  25. 		int sum = 0;
  26. 		for (int i = 0; i < x; ++i){
  27. 			for (int j = 0; j < y; ++j){
  28. 				if (mas[i][j]){
  29. 					if (i - 1 >= 0 && j - 1 >= 0) if (mas[i - 1][j] && mas[i][j - 1])  ++sum;
  30. 					if (i - 1 >= 0 && j + 1 < y) if (mas[i - 1][j] && mas[i][j + 1])  ++sum; 
  31. 					if (i + 1 < x && j + 1 < y) if (mas[i + 1][j] && mas[i][j + 1])  ++sum; 
  32. 					if (i + 1 < x && j - 1 >= 0) if (mas[i + 1][j] && mas[i][j - 1])  ++sum; 
  33. 				}
  34. 			}
  35. 		}
  36. 		System.out.print(sum);
  37. 		in.close();
  38. 		return;
  39. 	}
  40. }
Success #stdin #stdout 0.06s 2184192KB
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https://ideone.com/dUMGuN
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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