import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    char[] arr = A.toCharArray();
    boolean flag = true;

    /* Enter your code here. Print output to STDOUT. */
    for(int i = 0, j = (A.length()-1); i < A.length(); i++, j--)
    {
        if(arr[i] != arr[j])
        {
            flag = false;
            break;
        }
    }

    if(flag == false)
        System.out.println("No");
    else
        System.out.println("Yes");
}

}