package no341;

import java.util.Scanner;

public class Main {
	public static final char dots = '…';
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		int max = 0;
		int len = 0;
		for(int i=0;i<s.length();i++) {
			char c = s.charAt(i);
			if (c == dots) {
				len++;
				max = Math.max(max, len);
			}else{
				len = 0;
			}
		}
		System.out.println(max);
	}

}