#include <stdio.h>

int main() {
	char b = 0, a;
	int f = 0, cnt = 0, max = 0;

	while ((a = getchar()) != '\n') {
		if (b == -127 && a == 99) {
			cnt++;
			f = 1;
		}
		else if (a != -127) {
			f = 0;
		}
		if (cnt > max) max = cnt;
		if (f == 0) cnt = 0;
		b = a;
	}

	printf("%d\n", max);
	return 0;
}