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: Wrong Answer)

using System;
class program
{
    static void Main(string[] args)
    {
        int num = int.Parse(Console.ReadLine());
        int c = 0;
        int y, z;
        for(int k=2;k<=9;k++)
        {
            y = num % k;
            z = num / k;

            if (y==0&&z<=9)
            {
                Console.WriteLine("Yes");
                c = 1;
                break;
            }

        }
        if(c==0)
        {
            Console.WriteLine("No");
        }
    }
}