import java.lang.*;
import java.io.*;
import java.util.*;
public class MyProgram
{
public static void main(String[] args)
{
int n = 100000;
int k = 0;
while (n<1000000)
{
String str0 = String.valueOf(n);
String str1 = str0.substring(0,3);
String str2 = str0.substring(3);
StringBuffer sbr = new StringBuffer(str2);
sbr.reverse();
String str3 = sbr.toString();
if (str1.equals(str3)) {
System.out.println(n);
n++;
}
else {
n++;
}
}
}

}