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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace atcoder
{
	class Program
	{
		static void Main(string[] args)
		{
			var n = Console.ReadLine();
			//int N = int.Parse(Console.ReadLine());
			//var input = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
			bool flg = false;
			for (int i = 0;i < n.Length;i++)
			{
				if (n[i] == '9') flg = true;
			}
			Console.WriteLine((flg) ? "Yes" : "No");

			//Console.ReadLine();
		}
	}
}