import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int n = scan.nextInt();
for(int i = 1; i <= n; i++) {
int x = 0;
int z = i;
while(z != 0) {
x *= 10;
x += z % 10;
z = z / 10;
}
if(x == i) {
System.out.println(i);
}
}
}
}