#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    string s;
    cin >> s;
    int ans = 0;
    bool c = false,w = false;
    for(int i = 0;i < s.length();i++){
        if(s[i] == 'c'){
            c = true;
        }
        else if(!w && s[i] == 'w'){
            c = false;
            w = true;
        }
        else if(w && s[i] == 'w'){
            w = false;
        }
        if(c)ans++;
        if(w)ans++;
    }
    cout << ans;
    return 0;
}