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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int n,arr[40][40];
  4. struct node{
  5. 	int a,b;
  6. };
  7. queue<node> q;
  8. void bfs(int x,int y){
  9. 	q.push({x,y});
  10. 	while(!q.empty()){
  11. 		x=q.front().a,y=q.front().b;
  12. 		q.pop();
  13. 		if(x>n+1 || x<0 || y>n+1 || y<0){
  14. 			continue;
  15. 		}
  16. 		if(arr[x][y]==1 || arr[x][y]==2){
  17. 			continue;
  18. 		}
  19. 		arr[x][y]=2;
  20. 		q.push({x-1,y});
  21. 		q.push({x+1,y});
  22. 		q.push({x,y+1});
  23. 		q.push({x,y-1});
  24. 	}
  25. }
  26. int main() {
  27. 	cin>>n;
  28. 	for(int i=0;i<=n+1;i++){
  29. 		for(int j=0;j<=n+1;j++){
  30. 			if(i==0 || i==n+1 || j==0 || j==n+1){
  31. 				arr[i][j]=0;
  32. 			}
  33. 		}
  34. 	}
  35. 	for(int i=1;i<=n;i++){
  36. 		for(int j=1;j<=n;j++){
  37. 			cin>>arr[i][j];
  38. 		}
  39. 	}
  40. 	bfs(0,0);
  41. 	for(int i=1;i<=n;i++){
  42. 		for(int j=1;j<=n;j++){
  43. 			if(arr[i][j]==2){
  44. 				cout<<0<<" ";
  45. 			}else if(arr[i][j]==0){
  46. 				cout<<2<<" ";
  47. 			}else{
  48. 				cout<<1<<" ";
  49. 			}
  50. 		}
  51. 		cout<<"\n";
  52. 	}
  53. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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6
0 0 0 0 0 0
0 0 1 1 1 1
0 1 1 0 0 1
1 1 0 0 0 1
1 0 0 0 0 1
1 1 1 1 1 1
stdout
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0 0 0 0 0 0 
0 0 1 1 1 1 
0 1 1 2 2 1 
1 1 2 2 2 1 
1 2 2 2 2 1 
1 1 1 1 1 1
https://ideone.com/Fik0CE
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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