package ConditionalStatements;

import java.util.Scanner;

public class invalid {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int a=Integer.parseInt(scanner.nextLine());


        if(a>=100 && a<=200 || a==0){
            System.out.println();
        }else{
            System.out.println("invalid");
        }
    }
}