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)
	{
    	// 整数の入力
		int a = int.Parse(Console.ReadLine());
      	bool result = false;
      
      	//計算
      	for(int i = 1; i > 10; i++)
        {
          for(int j = 1; j > 10; j++)
          {
            if((i * j) == a)
            {
              result = true;
            }
          }
        }
      	//判定
      	if(result)
        {
          Console.WriteLine("Yes");
        }
      	else
        {
          Console.WriteLine("No");
        }
	}
}