#include <stdio.h>

char s[700];

int main(void) {
	scanf("%s", s);
	
	int i = 0, n = 0, max = 0;
	while(s[i] != 0) {
		if(s[i] == -127 && s[i+1] == 99) {
			n++;
			max = (max < n ? n : max);
			} else {
				n = 0;
			}
		i += 2;
	}
	
	printf("%d\n", max);
	
	return 0;
}