Problem Description

Given integers \(a, b\), if \(a \le b\), output YE5, otherwise output N0 (the second character is an Arabic numeral).

Input Format

Input consists of a single line containing two integers \(a, b\).

Output Format

Output a single line, which is your answer.

Sample Input and Output

Sample Input #1

3 5

Sample Output #1

YE5

Sample Input #2

5 3

Sample Output #2

N0

Notes

For \(100\%\) of the test cases, \(0 \le a, b \le 10^5\).

见题面 Input 部分

见题面 Output 部分