import java.util.Scanner;

/**
   Counts the number of words in a line.
   Input: a string containing the line
   Output: the number of words in the line
*/
public class CountWords
{
   public static void main(String[] args)
   {
      int count = 0;

      Scanner in = new Scanner(System.in);
      String input = in.nextLine();

      for(int i = 0; i < input.length(); i++)
      {
         if(" !?.".indexOf(input.charAt(i)) != -1){count++;}
      }

      System.out.println(count);
   }
}