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  1. #include <iostream>
  2. using namespace std;
  3. int n,sum,ans;
  4. string s;
  5. int main() {
  6. 	cin>>s;
  7. 	for(int i=s.size()-1;i>=0;i--){
  8. 		if(s[i]=='c'){
  9. 			sum++;
  10. 		}else if(s[i]=='a'){
  11. 			ans+=sum;
  12. 		}
  13. 	}
  14. 	cout<<ans;
  15. 	return 0;
  16. }
Success #stdin #stdout 0.01s 5320KB
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addcadcc
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5
https://ideone.com/BkqfZO
language:
C++ (gcc 8.3)
created:
1 hour ago
visibility:
public

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