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);
}
}
}
}