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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n,m;
  6. 	cin>>n>>m;
  7. 	int ms[n][n]={};
  8. 	for(int i=0; i<m; i++){
  9. 		int a,b;
  10. 		cin>>a>>b;
  11. 		a--;b--;
  12. 		ms[a][b]=1;
  13. 		ms[b][a]=1;
  14. 	}
  15. 	for(int i=0; i<n; i++){
  16. 		for(int j=0; j<n; j++)
  17. 			cout<<ms[i][j]<<" ";
  18. 		}
  19. 	return 0;
  20. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin 
5 3
1 3
2 3
2 5
stdout 
0 0 1 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0
https://ideone.com/UX9sKw
language:
C++ (gcc 8.3)
created:
15 days ago
visibility:
public

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