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.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static System.Console;

namespace Atcoder {
    class _81 {
        private int n;

        public _81(int n) {
            this.n = n;
        }

        public string Judge() {

            for(int i = 1; i <= 9; i++) {
                for(int j = 1; j <= 9; j++) {
                    if(i * j == n) {
                        return "Yes";
                    }
                }
            }

            return "No";
        }
    }

    class _81Main {
        static void Main() {
            int n = int.Parse(ReadLine());

            _81 Cal = new _81(n);

            WriteLine(Cal.Judge());
        }
    }
}