#include <stdio.h>

int main(void) {
	char str[101];
	int i, j, count;
	int flag_c = 0, flag_w1 = 0, flag_w2 = 0;
	int min = 100;
	
	scanf("%s", str);
	
	j = 0;
	while(str[j] != '\0'){
		i = j;
		count = 0;
		flag_c = 0;
		flag_w1 = 0;
		flag_w2 = 0;
		while(str[i] != '\0'){
			if(str[i] == 'c'){
				count++;
				flag_c = 1;
			}
			else if(flag_c == 1 && flag_w1 == 0 && str[i] == 'w'){
				flag_w1 = 1;
				count++;
			}
			else if(flag_c == 1 && flag_w1 == 1 && flag_w2 == 0 && str[i] == 'w'){
				count++;
				flag_w2 = 1;
				flag_c = 0;
				flag_w1 = 0;
				break;
			}
			else if(flag_c == 1 || flag_w1 == 1){
				count++;
			}
			i++;
		}
		if(flag_w2 == 1 && count < min){
			min = count;
		}
		
		j++;
	}
	printf("%d\n", min);

    return 0;
}