import java.util.*;

public class Exercise32{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    String str = sc.next();
    char[] charArray = str.toCharArray();
    int count = 0;
    int max = 0;

    for (int n = 0; n < charArray.length; n++){
      if(charArray[n] == '…'){
          count++;
      }else if (charArray[n] != '…'){
        count = 0;
      }
      max = Math.max(max, count);
    }
    System.out.println(max);
  }
}