import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String S = scan.next();
		scan.close();
		int cnt = 0;
		int max = 0;
		for(int i = 0; i < S.length(); i++) {
			char c = S.charAt(i);
			if(c == '…') {
				cnt ++;
				if(max < cnt) {
					max = cnt;
				}
			}else {
				cnt = 0;
			}
		}
		System.out.println(max);
	}
}