import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
String str=sc.nextLine();
String[] s=str.split(" ");
int length=s[s.length-1].length();
System.out.println(length);
}
}
public class Main{
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
String str=sc.nextLine();
String[] s=str.split(" ");
int length=s[s.length-1].length();
System.out.println(length);
}
}