/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        int cnt = 0;
        int max = 0;
        for(int i=0;i<line.length();i++){
        	char c = line.charAt(i);
        	if(c == '…'){
        		cnt++;
        	}else{
        		max = Math.max(max,cnt);
        		cnt=0;
        	}
        }
        max = Math.max(max,cnt);
        System.out.println(max);

	}
}