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: Wrong Answer)

const SEARCH_NUM = 9;

$result = false;

$num = trim(fgets(STDIN));  

if(floor($num / 10) == SEARCH_NUM){
	$result = true;
}
if(($num % 10) == 9){
	$result = true;
}

if($result){
	echo "Yes";
}else{
	echo "No";
}