Problem:
Score : 200 points

Problem Statement

Having learned the multiplication table, Takahashi can multiply two integers between 1 and 9 (inclusive) together.

Given an integer N, determine whether N can be represented as the product of two integers between 1 and 9. If it can, print Yes; if it cannot, print No.

Constraints

1 \leq N \leq 100

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N can be represented as the product of two integers between 1 and 9 (inclusive), print Yes; if it cannot, print No.

Sample Input 1

10

Sample Output 1

Yes

10 can be represented as, for example, 2 \times 5.

Sample Input 2

50

Sample Output 2

No

50 cannot be represented as the product of two integers between 1 and 9.

Sample Input 3

81

Sample Output 3

Yes

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

using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
	static void Main()
	{
        int N = int.Parse(Console.ReadLine());
        bool able = false;
        for (int i = 1; i <= 9; i++)
        {
            if (N % i == 0)
            {
                int m = N / i;
                if (1 <= m && m <= 9)
                {
                    able = true;
                    break;
                }
            }
        }

        if (able)
            Console.WriteLine("Yes");
        else
            Console.WriteLine("No");
	}

	static string[] InStrs()
	{
		return Console.ReadLine().Split(' ');
	}
	static IEnumerable<int> InInts()
	{
		return Console.ReadLine().Split(' ').Select(x => int.Parse(x));
	}
	static IEnumerable<long> InLongs()
	{
		return Console.ReadLine().Split(' ').Select(x => long.Parse(x));
	}
}