class in{struct myIterator{int it;const bool rev;explicit constexpr myIterator(int it_, bool rev=false):it(it_),rev(rev){}int operator*(){return it;}bool operator!=(myIterator& r){return it!=r.it;}void operator++(){rev?--it:++it;}};const myIterator i,n;public:explicit constexpr in(int n):i(0),n(n){}explicit constexpr in(int i,int n):i(i,n<i),n(n){}const myIterator& begin(){return i;}const myIterator& end(){return n;}};

#include <bits/stdc++.h>
using namespace std;

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    string s;
    cin >> s;
    int n = s.size();
    vector<int> a;
    for(int i : in(2, n)) {
        string cur = s.substr(i - 2, 3);
        if(cur == "ccw")
          a.emplace_back(i);
    }
    int k = a.size();
    if(k == 0) {
        cout << 0 << endl;
        return 0;
    }
    int ans = 1e9;
    for(int i : in(k)) {
        int cost = a[i] - 1;
        if(i < k - 1)
          cost += n - (a[i + 1]);
        ans = min(ans, cost);
        int cost2 = n - a[i];
        if(i > 0)
          cost2 += a[i - 1] - 1;
        ans = min(ans, cost2);
    }
    cout << ans << endl;
}