import java.util.*;
class Example3{public static void main(String args[]){Scanner sc = new Scanner(System.in);String s = sc.nextLine();//这里的sc.nextLine()空格也会记数;StringTokenizer st = new StringTokenizer(s," ");int numble = st.countTokens();while(st.hasMoreTokens()){String str = st.nextToken();}System.out.print(numble);}
}