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# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;
using System.Linq;

namespace testing
{
    class Program
    {

        static void Main(string[] args)
        {
            //int[] a = Console.ReadLine().Split().Select(int.Parse).ToArray();
            int a = int.Parse(Console.ReadLine());
            int b = 0;
            int c = 0;
            for (int i = 1; i < 10; i++)
            {
                if (a % i == 0 && b == 0 && c == 0) { b = i; }
                if (a % i == 0 && b != 0 && c == 0) { c = i; }
            }
            if (b != 0 && c != 0 && a == b * c) { Console.WriteLine("Yes"); }
            else { Console.WriteLine("No"); }
        }
    }
}