Problem:
Score : 100 points

Problem Statement

It is September 9 in Japan now.

You are given a two-digit integer N. Answer the question: Is 9 contained in the decimal notation of N?

Constraints

10≤N≤99

Input

Input is given from Standard Input in the following format:

N

Output

If 9 is contained in the decimal notation of N, print Yes; if not, print No.

Sample Input 1

29

Sample Output 1

Yes

The one's digit of 29 is 9.

Sample Input 2

72

Sample Output 2

No

72 does not contain 9.

Sample Input 3

91

Sample Output 3

Yes

Solution in PHP (5.6.30) (judge verdict: Accepted)

<?php
// Try AtCoder
// author: Leonardone @ NEETSDKASU

function gets() { return trim(fgets(STDIN)); }

$s = gets();

if ($s[0] === '9' || $s[1] === '9') {
    echo 'Yes';
} else {
    echo 'No';
}