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)

#!/usr/bin/ruby
#encoding: utf-8

n = gets.chomp
cnt = 0
(0..n.size-1).each do |i|
  if n[i] == '9'
    cnt += 1
  end
end

if cnt != 0
  puts "Yes"
else
  puts "No"
end