BonusScore

import java.text.DecimalFormat;
import java.util.Scanner;

public class Main {

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

        int score = scanner.nextInt();

        if( score >=1 && score <=9){
            if(score >=1 && score<=3 ){
                score *= 10;
                System.out.println(score);
            }else if(score >=4 && score <=6){
                score *= 100;
                System.out.println(score);
            }else{
                score *=1000;
                System.out.println(score);
            }
        }else{
            System.out.println("invalid score");
        }
    }
}