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  1. #include <iostream>
  2. #include <string>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. 	string str;
  9. 	char chars[256];
  10. 	for(size_t i = 0; i < 256; i++)
  11. 		chars[i]='0';
  12. 	cin >> str;
  13. 	for(size_t i = 0; i < str.length(); i++)
  14. 		if(chars[str[i]] == '0')
  15. 			chars[str[i]]=str[i];
  16. 		else chars[str[i]]='2';
  17. 	for(size_t i = 0; i < 128; i++)
  18. 		if (chars[i]!='0' && chars[i]!='2')
  19. 			cout<<chars[i];
  20. 	cout << endl;
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/QZ2blP
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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