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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main() {
  4. 	int t;
  5. 	cin>>t;
  6. 	while(t--){
  7. 		int n;
  8. 		cin>>n;
  9. 		vector<string> v;
  10. 		for(int i=0;i<n;i++){
  11. 			string s;
  12. 			cin>>s;
  13. 			v.push_back(s);
  14. 		}
  15. 		sort(v.begin(),v.end());
  16. 		for(int i=n-1;i>=0;i--){
  17. 			cout<<v[i];
  18. 		}
  19. 		cout<<endl;
  20.  
  21. 	}
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 4552KB
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stdout
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https://ideone.com/Oah68x
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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