#include<iostream>

using namespace std;

int main(){

   string S;
   cin>> S;

   int l, r;
   for(int i=0; i<S.size(); i++){
      if(S[i]=='c'&&S[i+1]=='c') l=i;
      if(S[i]=='c'&&S[i+1]=='w') r=i+1;
   }
   
   cout<< min<int>(l+1, S.size()-r)<< endl;

   return 0;
}