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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. 	set<char>::iterator iter;
  10. 	char m[100];
  11. 	cin>>m;
  12. 	int n = strlen(m);
  13. 	set<char> s;
  14. 	for(int i=0; i<n; i++){
  15. 		if(isdigit(m[i])){
  16. 			s.insert(m[i]);
  17.  
  18. 		}
  19. 	}
  20. 	cout<<s.size()<<endl;
  21.  
  22.  
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 5324KB
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https://ideone.com/UVRZQu
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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