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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int t;
  6.     cin>>t;
  7.     while(t--){
  8.         int z;
  9.         cin>>z;
  10.         string s;
  11.         cin>>s;
  12.         char tt;
  13.         cin>>tt;
  14.         long long sum=0;
  15.         long long sum1=0;
  16.         //int count=0;
  17.         int j=0;
  18.         int n=z;
  19.         sum=(n*(2+(n-1)))/2;
  20.         //cout<<sum<<endl;
  21.         for(int i=0;i<z;i++){
  22.             if(s[i]==tt){
  23.                 sum1+=(j*(2+(j-1)))/2;
  24.                 j=0;
  25.             }
  26.             else{
  27.              j++;   
  28.             }
  29.  
  30.  
  31.         }
  32.         sum-=sum1;
  33.         cout<<sum<<endl;
  34.  
  35.     }
  36. 	return 0;
  37. }
  38.  
Success #stdin #stdout 0s 4520KB
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https://ideone.com/SJ39MS
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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