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  1. int arr[n][m];
  2. int[] dx = {0, 1, 0, -1};
  3. int[] dy = {1, 0, -1, 0};
  4.  
  5. for (int i = 0; i < n; ++i) {
  6.     for (int j = 0; j < m; ++j) {
  7. 		for (int k = 0; k < 4; ++k) {
  8. 			int nx = i+dx[k];
  9. 			int ny = j+dy[k];
  10.  
  11. 			if (nx >= 0 && nx < n && ny >= 0 && ny < m) {
  12.  
  13. 			}
  14. 		}
  15. 	}
  16. }
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https://ideone.com/T6Dh09
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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