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  1. #include <iostream>
  2. #include <vector>
  3. #include <set>
  4. #include <ctime>
  5. #include <string.h>
  6. using namespace std;
  7.  
  8. int main() {
  9. 	string text;
  10. 	getline(cin, text);
  11. 	set<char> see;
  12. 	set<char> dupl;
  13. 	for(char s : text){
  14. 		if(see.find(s) != see.end()){
  15. 			dupl.insert(s);
  16. 		}
  17. 		else{
  18. 			see.insert(s);
  19. 		}
  20. 	}
  21. 	set<char>::iterator it;
  22. 	for(it = dupl.begin(); it != dupl.end(); it++){
  23.     	cout << *it << " ";
  24. 	}
  25. 	cout<<endl;
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 5316KB
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Hello
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l
https://ideone.com/qkF3rM
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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