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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
int main(void){
int A,B,C,D;
scanf("%d %d %d %d",&A,&B,&C,&D);
if(A<=C){
  if(B<D){
    printf("%d\n",B-C);
  }
  else {
    printf("%d\n",D-C);
  }
}
else{
  if(B<D){
    printf("%d",B-A);
  }
  else{
    printf("%d",D-A);
  }
}
return 0;
}