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  1. #include<bits/stdc++.h>
  2. typedef long long ll;
  3. using namespace std;
  4. void FASTCODE() {
  5. 	std::ios_base::sync_with_stdio(0);
  6. 	cin.tie(0);
  7. 	cout.tie(0);
  8. }
  9.  
  10. int main() {
  11. 	FASTCODE();
  12. 	int n;
  13. 	cin >> n;
  14. 	string s;
  15. 	cin >> s;
  16. 	int sum=0;
  17. 	for(int i=0;i<n;i++){
  18.             int fre[231]={0};
  19.         for(int j=i;j<n;j++){
  20.             string x="";
  21.             x+=s[j];
  22.             if(x.size()>=3){
  23.                 for(int k=0;k<x.size();k++){
  24.                     fre[x[k]]++;
  25.                 }
  26.                 bool b=true;
  27.                 for(int f=0;f<=245;f++){
  28.                     if(fre[f]>1){
  29.                         b=false;
  30.                         break;
  31.                     }
  32.                 }
  33.                 if(b==true){
  34.                     sum++;
  35.                 }
  36.             }
  37.         }
  38. 	}
  39. 	cout << sum;
  40. 	return 0;
  41. }
  42.  
Success #stdin #stdout 0.01s 5476KB
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https://ideone.com/xMvjAv
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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