import java.util.Scanner;
public class Sirent {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		StringBuilder str = new StringBuilder(s.next());
		s.close();
		int a = 0,b = 0;
		String ten = "…";
		while(str.indexOf(ten) != -1){
			if(str.indexOf(ten) == 0){
				b++;
				str.deleteCharAt(0);
			}else{
				a =Math.max(a, b);
				b = 1;
				str.delete(0, str.indexOf(ten)+1);
			}
		}
		a = Math.max(a, b);
		System.out.println(a);

	}

}