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>
    #include <stdlib.h>
     
    int main() {
     
    	int num_a, num_b, num_c, num_d;
    	int max_s,min_e;
    	int res = 0;
     
    	scanf("%d %d %d %d", &num_a, &num_b, &num_c, &num_d);
     
    	max_s = (num_a > num_c) ? num_a : num_c;
     
    	min_e = (num_b < num_d) ? num_b : num_d;
     
    	res = min_e - max_s;
     
    	if (res < 0) {
    		printf("%d", 0);
    	} else {
    		printf("%d", res);
    	}
     
    	return 0;
     
    }