import java.util.Scanner;
public class q1152 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String[] inputs = sc.nextLine().trim().split(" ");
if(inputs.length == 1 && inputs[0].equals(""))
System.out.println(0);
else
System.out.println(inputs.length);
}
}
trim() : 앞뒤 공백 제거 함수