Problem:
Score : 100 points

Problem Statement

You are given a grid with 2 rows and 3 columns of squares.
The color of the square at the i-th row and j-th column is represented by the character C_{ij}.

Write a program that prints YES if this grid remains the same when rotated 180 degrees, and prints NO otherwise.

Constraints

C_{i,j}(1 \leq i \leq 2, 1 \leq j \leq 3) is a lowercase English letter.

Input

Input is given from Standard Input in the following format:

C_{11}C_{12}C_{13}
C_{21}C_{22}C_{23}

Output

Print YES if this grid remains the same when rotated 180 degrees; print NO otherwise.

Sample Input 1

pot
top

Sample Output 1

YES

This grid remains the same when rotated 180 degrees.

Sample Input 2

tab
bet

Sample Output 2

NO

This grid does not remain the same when rotated 180 degrees.

Sample Input 3

eye
eel

Sample Output 3

NO

Solution in C (GCC 5.4.1) (judge verdict: Accepted)


#include <stdio.h>
int main(void) {

	char str1[4] = { '\0' };
	char str2[4] = { '\0' };
	//char str1[3];
	//char str2[3];
	scanf("%s %s", str1, str2);
	//printf("%s", str1);
	int flag = 0;
	for (int i = 0; i < 3; i++) {
		if (str1[i] != str2[2 - i]) {
			flag = 1;
			break;
		}
	}
		if (flag == 0) {
			printf("%s", "YES");
		}
		else
		{
			printf("%s", "NO");
		}
	return 0;
}