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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <iostream>
#include <vector>
#include <climits>
#include <algorithm>
#include <cmath>
#include <string>
#define INF (INT_MAX / 2)
//#define DEBUG true
#define DEBUG false
using namespace std;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);

  string s;
  cin >> s;
  for(int i = 0; i < s.length() / 2; i++){
    if(s[i] != s[s.length() - i - 1]){
      cout << "No" << endl;
      return 0;
    }
  }
  cout << "Yes" << endl;

  return 0;
}