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  1. #include <iostream>
  2. #include <cstring>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	string s;
  7. 	cin >> s;
  8. 	for(int j = 0; j < s.size(); j++) {
  9. 		int i = j + 1;
  10. 		while (i < s.size()) {
  11. 			if(s[j] == s[i] and i != j) s.erase(i,1);
  12. 			else i++;
  13. 		}
  14. 	}
  15. 	cout << s.size();
  16. 	return 0;
  17. }
Success #stdin #stdout 0s 4400KB
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stdout
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https://ideone.com/h0eIYF
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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