import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    int ans = 0;
    int[] table = new int[S.length()];
    for(int i = 0; i < S.length(); i++) {
      if(S.charAt(i) == '…') table[i] = 1;
      if((i > 0) && (table[i] != 0)) table[i] = table[i] + table[i - 1];
    }
    for(int i = 0; i < S.length(); i++) {
      ans = Math.max(ans, table[i]);
    }
    System.out.println(ans);
  }
}