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  1. #include <iostream>
  2. #include <unordered_map>
  3. #include <string>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	unordered_map<string, size_t> occurs;
  8. 	string str;
  9. 	while(cin >> str)
  10. 		occurs[str] += 1;
  11.  
  12. 	for(auto occur : occurs){
  13. 		if(occur.second > 1)
  14. 			cout << occur.first << endl;
  15. 	}
  16. 	return 0;
  17. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
ala ma kota a kot ma ala anal ala wala kot tala
stdout 
ala
kot
ma
https://ideone.com/izGpsd
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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