#include <bits/stdc++.h>
#define rep(i,n) for (int i=0;i<(n);i++)
using namespace std;

int main() {
    string s;
    cin >> s;
    int n = s.size();
    assert(3 <= n && n <= 100000);
    bool flag = true;
    int i, j;
    for (i = 0; i < n && s[i] == 'c'; i++) {
        ;
    }
    for (j = n-1; j >= 0 && s[j] == 'w'; j--) {
        ;
    }

    cerr << i << " " << j << endl;

    assert(i - 1 == j);
    assert(s.find("ccw") != string::npos);

}