
import java.util.*;
public class Main {
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
String n = scan.next();
for(int i = 0,j = n.length() - 1; i <= j; i++, j--)
{
if(n.charAt(i) != n.charAt(j))
{
System.out.println("No");
return ;
}
}
System.out.println("Yes");
}
}


