import java.util.Scanner;

/**
 * @author zmstart
 * @create 2022-03-20 20:19
 */
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();
        for (int i = 1; i <= num; i++) {
            StringBuffer buffer = new StringBuffer(String.valueOf(i));
            StringBuffer reverse = buffer.reverse();

            if (reverse.toString().equals(String.valueOf(i))){
                System.out.println(i);
            }
        }
    }
}