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  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	// your code goes here
  7. 	int t;
  8. 	cin>>t;
  9. 	while(t--){
  10. 		string s;
  11. 		int c=0;
  12. 		cin>>s;
  13. 		map<char,int>m;
  14. 		for(auto x:s){
  15. 			m[x]++;
  16. 		}
  17. 		for(auto x:s){
  18. 			if(m[x]>1){
  19. 				cout<<x<<"\n";
  20. 				c=1;
  21. 				break;
  22. 			}
  23. 		}
  24. 		if(c==0) cout<<"."<<"\n";
  25. 	}
  26. 	return 0;
  27. }
Success #stdin #stdout 0.01s 5548KB
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https://ideone.com/I3RyR9
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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