import java.util.Scanner;

class main{
    public static void main(String args[]){
	Scanner scan = new Scanner(System.in);
	int count = 0;
	int max = 0;
	String str = scan.next();

	for(int i = 0; i < str.length(); i++){
	    char ch = str.charAt(i);
	    if(ch == '…'){
		count++;
		if(i == str.length() - 1){
		    if(max < count){
			max = count;
		    }
		}
	    }
	    else{
		if(max < count){
		    max = count;
		    count = 0;
		}
	    }
	}

	System.out.println(max);

    }
}