#include<string>
#include<iostream>
#include<algorithm>
#include<set>
#include<math.h>
#include<vector>
#include<sstream>
#include<queue>
#include<functional>
#include<bitset>
#include<cstdio>
using namespace std;

int main() {
	string a;
	cin >> a;
	int m = a.length() / 2;
	if (a.length() % 2) m++;
	int c = 0, l =0;
	for (int i = 0; i < a.length(); i++) {
		if (a[i] == 'c' && a[i + 1] == 'c' && a[i+2] == 'w') {
			l = i+1;
		}
	}
	c = 0;
	int r = 0;
	for (int i = a.length() - 3; i >= 0; i--) {
		if (a[i] == 'c' && a[i + 1] == 'c' && a[i + 2] == 'w') {
			r = a.length() - i - 2;
		}
	}
	int mx = min(l, r);
	cout << mx << endl;
	return 0;
}