fork download
copy 
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. vector<int> ke[1001];
  4. int main(){
  5. 	int n;  // n là d?nh
  6. 	cin >> n ;
  7. 	for(int i = 1 ; i <= n ; i++){
  8. 		string s; 
  9. 		getline(cin,s);
  10. 		stringstream ss(s);
  11. 		string token;
  12. 		while(ss >> token){
  13. 			ke[i].push_back(stoi(token));
  14. 		}
  15. 	}
  16. 	for(int i = 1 ; i <= n ; i++){
  17. 		sort(ke[i].begin(),ke[i].end());
  18. 	}
  19. 	int a[n+1][n+1];
  20. 	for(int i = 1 ; i<= n ; i++){
  21. 		for(int j = 1 ; j <= ke[i].size() ; j++){
  22. 			a[i][j] = 1 ;
  23. 		}
  24. 	}
  25. 	for(int i = 1 ; i <= n ; i++){
  26. 		for(int j = 1 ; j <= n ; j++){
  27. 			if(a[i][j] == 1){
  28. 				a[i][j] = 0 ;
  29. 				a[j][i] = 0;
  30. 				cout << i << " " << j << endl;
  31. 		}
  32. 	}
  33. }
  34. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
5
4
3 4 5
2 5
1 2
2 3
stdout
copy 
2 1
3 1
3 2
3 3
4 1
4 2
5 1
5 2
https://ideone.com/ZCGaeS
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!