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 <bits/stdc++.h>

using namespace std;
int bits[100],len;
int check(int sta,int end){
    for(int i=0;sta+i<=end-i;i++)
        if(bits[sta+i]!=bits[end-i])
            return 0;
    return 1;
}
int main()
{
    int n;
    scanf("%d",&n);
    while(n){
        bits[++len]=n%10;
        n/=10;
    }
    if(check(1,len))puts("Yes");
    else puts("No");
}