Submission #7454210

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for( int i = 0 ; i < n ; i++ )
 
int main(){
  string S ;
  cin >> S ;
  int counter = 0 , I , A=0 ;
  I = S.size();
  //cout << I << endl ;
  //2525が繰り返されている回数をカウントする。
  rep(i,I) { 
  if (S[i] == '2') {
    if (S[i+1] == '5') counter++ ;
    i = i + 1 ;
    //cout << "25カウントは" <<counter << endl;
    if( i+1 == I ) A = A + (counter+1)*counter/2 ;
  }
  
  else {
    A = A + (counter+1)*counter/2;
    counter = 0 ;
    //cout << "カウントは" <<counter << endl;
  }
 }
  cout << A << endl;
}

Submission Info

Judge Result