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;

namespace AtCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            int input;
            Int32.TryParse(Console.ReadLine(), out input);
            if (input > 81)
            {
                Console.WriteLine("No");
                return;
            }
            else
            {
                for (int i = 9; i > 0; i--)
                {
                    if (input % i == 0 && (input / i) <= i)
                    {
                        Console.WriteLine("Yes");
                        return;
                    }
                }
                Console.WriteLine("No");
            }
        }
    }
}