Problem:
Score : 100 points

Problem Statement

You are given a three-digit positive integer N.

Determine whether N is a palindromic number.

Here, a palindromic number is an integer that reads the same backward as forward in decimal notation.

Constraints

100≤N≤999

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N is a palindromic number, print Yes; otherwise, print No.

Sample Input 1

575

Sample Output 1

Yes

N=575 is also 575 when read backward, so it is a palindromic number. You should print Yes.

Sample Input 2

123

Sample Output 2

No

N=123 becomes 321 when read backward, so it is not a palindromic number. You should print No.

Sample Input 3

812

Sample Output 3

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Reflection;

namespace CSharpConsoleApp {

    delegate void test();
    public class Program {


        public static int Main() {
            var input = Console.ReadLine().Split(' ').ToList();
            var N = input[0];
            if (N.First() == N.Last())
                "Yes".QBox();
            else
                "No".QBox();
            return 0;
        }
    }
}

public static class Extensions {
    public static void QBox<T>(this T t) {
        Console.WriteLine(t);
    }
}