import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		char[] inputs = sc.next().toCharArray();
		
		int max = 0;
		int count = 0;
		
		for(int i = 0; i < inputs.length; i++){
			if(inputs[i] == '…'){
				count++;
			}else{
				max = Math.max(max, count);
				count = 0;
			}
		}
		max = Math.max(max, count);
		
		System.out.println(max);
	}

}