import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner scanner =new Scanner(System.in);
String s = scanner.nextLine();
String[] split = s.split(" ");
for (int i = split.length-1; i >=0 ; i--) {
System.out.println(split[i].length());
break;
}
}
}



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