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  1. #include<iostream>
  2. #include<map>
  3. #include<set>
  4. #include<string>
  5. #include<vector>
  6. #include<algorithm>
  7.  
  8. using namespace std;
  9.  
  10. int main() {
  11. 	int N;
  12. 	cin >> N;
  13.  
  14. 	map<string, set<string>> xs;
  15.  
  16. 	for(int i=0; i<N; i++){
  17. 		string k, v;
  18. 		cin >> k >> v;
  19. 		xs[k].insert(v);
  20. 	}
  21.  
  22. 	for_each(xs.begin(), xs.end(), [xs](auto& it){
  23. 		cout << it.first << "," << *(xs.at(it.first).begin()) << endl;
  24. 	});
  25.  
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 4652KB
comments (?)
stdin
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6
c e
b c
c f
b d
a b
c g
stdout
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a,b
b,c
c,e
https://ideone.com/CUTjOy
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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