package yukicoder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class N341 {

	public static void main(String[] args)throws IOException
	{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String str=br.readLine();
		int cnt=0;
		int max=0;
		for(int i=0;i<str.length();i++)
		{
			if(str.substring(i, i+1).equals("…"))
			{
				cnt++;
				max=(cnt>max)?cnt:max;
			}
			else
			{
				cnt=0;
			}
		}
		System.out.println(max);
	}

}