public class Solution {

    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String A=sc.next();
        sc.close();
        
        String[] str = A.split("");
        int i=0;
        int j=(str.length)-1;
        boolean flag= true;
        while(i<j){
            if (str[i].compareTo(str[j]) !=0){
                flag=false;
                break;
            }
            
                i++;
                j--;  
        }
        if(flag==true){
            System.out.println("Yes");
        }
        else if(flag==false){System.out.println("No");}
    }
}