#include <iostream>
#include <sstream>
#include <algorithm>

using namespace std;

int main(int argc, char *argv[])
{
	string s;
	cin >> s;
	int ans = 0;
	int c = 0;
	for (int i = 0; i < (int)s.length() - 1; ++i) {
		if ((char)s[i] == -127 && (char)s[i + 1] == 99) {
			++c;
			++i;
			ans = max(ans, c);
		} else {
			c = 0;
		}
	}
	cout << ans << endl;
	return 0;
}