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;

namespace September9
{
    class Program
    {
        static void Main(string[] args)
        {
            string strInp = Console.ReadLine();

            for (int i = 0; i < strInp.Length; i++) {
                if (strInp.Substring(i, 1) == "9") {
                    Console.WriteLine("Yes");
                    return; // 処理を抜ける
                }
            }
            // todo 終了処理
            Console.WriteLine("No");

            // for debug
            return;
        }
    }
}