#include <stdio.h>
#include <string.h>

int main(void){
	char str[100];
	scanf("%s",str);
	
	char *comparison = "…";
	
	int len = strlen(str);
	int count = 0;
	int ans = 0;
	for(int i = 0;i < len;i + 2){
		if(str[i] == comparison[0] && str[i + 1] == comparison[1]){
			count++;
		}else{
			count = 0;
		}
		if(ans < count){
			ans = count;
		}
	}
	printf("%d",ans);
}