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 Ruby (2.3.3) (judge verdict: Accepted)

# 今、日本は 9 月 9 日です。
# 二桁の整数 N が与えられるので、十進法で N に 9 が含まれるか答えてください。

n = gets
result = false
n.length.times do |i|
    if n[i] == "9"
        result = true
        break
    end
end
puts result ? "Yes" : "No"