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  1. import java.util.*;
  2.  
  3. public class Main{
  4. 	public static int ram(int[][] a){
  5. 		int c=0;
  6. 		int rl = a.length;
  7. 		int cl = a[0].length;
  8. 		for(int i=0;i<rl;i++){
  9. 			for(int j=0;j<cl;j++){
  10. 				if(a[i][j] == 1){
  11. 					if(i-1 == -1 || a[i-1][j] == 0){
  12. 						c++;
  13. 					}
  14. 					if(j-1 == -1 || a[i][j-1] == 0){
  15. 						c++;
  16. 					}
  17. 					if(i+1 == rl || a[i+1][j] == 0){
  18. 						c++;
  19. 					}
  20. 					if(j+1 == cl || a[i][j+1] == 0){
  21. 						c++;
  22. 					}
  23. 				}
  24. 			}
  25. 		}
  26. 		return c;
  27. 	}
  28.  
  29. 	public static void main(String[] args){
  30. 		Scanner sc = new Scanner(System.in);
  31. 		int rt = sc.nextInt();
  32. 		while(rt>0){
  33. 			int r = sc.nextInt();
  34. 			int c = sc.nextInt();
  35. 			int[][] a = new int[r][c];
  36. 			for(int i=0;i<r;i++){
  37. 				for(int j=0;j<c;j++){
  38. 					a[i][j] = sc.nextInt();
  39. 				}
  40. 			}
  41. 			System.out.println(ram(a));
  42.  
  43. 			rt--;
  44. 		}
  45. 	}
  46. }
Success #stdin #stdout 0.14s 56620KB
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https://ideone.com/eXNa0C
language:
Java (HotSpot 12)
created:
30 days ago
visibility:
public

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