#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <iomanip>
#include <math.h> 
#include <stack>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <tuple>
#include <cctype>
#include <ctype.h>
#include <set>
#include <sstream>

using namespace std;

int main(){
	int i, j;
	string s;

	cin >> s;

	if (s == "ccw") {
		cout << 1 << endl;
		return 0;
	}

	int siti = 9999999, eiti=9999999;

	for (i = 0; i < s.length() - 2; i++) {
		if (s[i] == 'c' && s[i + 1] == 'c' && s[i + 2] == 'w') {
			siti = i;
			break;
		}
	}

	for (i = s.length(); i >= 2; i--) {
		if (s[i] == 'w' && s[i - 1] == 'c' && s[i - 2] == 'c') {
			eiti = i;
			break;
		}
	}

	if (siti != 9999999 && eiti != 9999999) {
		if (siti + 1 <= s.length() - eiti) {
			cout << siti + 1 << endl;
		}
		else if (siti + 1 > s.length() - eiti) {
			cout << s.length() - eiti  << endl;
		}
	}
	else {
		cout << 0 << endl;
	}



	getchar();
	getchar();
	return 0;
}