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)

namespace AtCoder.ABC.B144
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Numerics;
    using System.IO;

    using AtCoder.ABC.IO;

    public class Quest
    {
        public object Solve(Parser parser)
        {
            int n = parser.Integer();

            if (
                n == 1 * 1 || n == 1 * 2 || n == 1 * 3 || n == 1 * 4 || n == 1 * 5 || n == 1 * 6 || n == 1 * 7 || n == 1 * 8 || n == 1 * 9 ||
                n == 2 * 1 || n == 2 * 2 || n == 2 * 3 || n == 2 * 4 || n == 2 * 5 || n == 2 * 6 || n == 2 * 7 || n == 2 * 8 || n == 2 * 9 ||
                n == 3 * 1 || n == 3 * 2 || n == 3 * 3 || n == 3 * 4 || n == 3 * 5 || n == 3 * 6 || n == 3 * 7 || n == 3 * 8 || n == 3 * 9 ||
                n == 4 * 1 || n == 4 * 2 || n == 4 * 3 || n == 4 * 4 || n == 4 * 5 || n == 4 * 6 || n == 4 * 7 || n == 4 * 8 || n == 4 * 9 ||
                n == 5 * 1 || n == 5 * 2 || n == 5 * 3 || n == 5 * 4 || n == 5 * 5 || n == 5 * 6 || n == 5 * 7 || n == 5 * 8 || n == 5 * 9 ||
                n == 6 * 1 || n == 6 * 2 || n == 6 * 3 || n == 6 * 4 || n == 6 * 5 || n == 6 * 6 || n == 6 * 7 || n == 6 * 8 || n == 6 * 9 ||
                n == 7 * 1 || n == 7 * 2 || n == 7 * 3 || n == 7 * 4 || n == 7 * 5 || n == 7 * 6 || n == 7 * 7 || n == 7 * 8 || n == 7 * 9 ||
                n == 8 * 1 || n == 8 * 2 || n == 8 * 3 || n == 8 * 4 || n == 8 * 5 || n == 8 * 6 || n == 8 * 7 || n == 8 * 8 || n == 8 * 9 ||
                n == 9 * 1 || n == 9 * 2 || n == 9 * 3 || n == 9 * 4 || n == 9 * 5 || n == 9 * 6 || n == 9 * 7 || n == 9 * 8 || n == 9 * 9)
            {
                return "Yes";
            }
            else
            {
                return "No";
            }
        }
    }

    static class Program
    {
        static void Main(string[] args)
        {
            var i = new Parser(Console.OpenStandardInput());
            var o = new Printer(Console.OpenStandardOutput());
            var got = new Quest().Solve(i);
            o.WriteLine(got);
            o.Flush();
        }
    }
}
namespace AtCoder.ABC.IO
{
    #region IO

    using System;
    using System.IO;
    using System.Text;
    using System.Linq;
    using System.Collections.Generic;
    using System.Globalization;

    public class Parser
    {
        public Parser(Stream stream)
        {
            str = stream;
        }

        public readonly Stream str;
        private readonly byte[] buf = new byte[1024];
        private int len, ptr;
        public bool isEof;

        public bool IsEndOfStream
        {
            get { return isEof; }
        }

        public IEnumerable<Parser> Take(int n)
        {
            return Enumerable.Range(1, n).Select(_ => this);
        }

        private byte read()
        {
            if (isEof) return 0;
            if (ptr < len) return buf[ptr++];
            ptr = 0;
            if ((len = str.Read(buf, 0, 1024)) > 0) return buf[ptr++];
            isEof = true;
            return 0;
        }

        public char Char()
        {
            byte b;
            do b = read(); while ((b < 33 || 126 < b) && !isEof);
            return (char)b;
        }

        public string Scan()
        {
            var sb = new StringBuilder();
            for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
                sb.Append(b);
            return sb.ToString();
        }

        public string ScanLine()
        {
            var sb = new StringBuilder();
            for (var b = Char(); b != '\n'; b = (char)read())
                if (b == 0) break;
                else if (b != '\r') sb.Append(b);
            return sb.ToString();
        }

        public long Long()
        {
            if (isEof) return long.MinValue;
            long ret = 0;
            byte b;
            var ng = false;
            do b = read(); while (b != 0 && b != '-' && (b < '0' || '9' < b));
            if (b == 0) return long.MinValue;
            if (b == '-')
            {
                ng = true;
                b = read();
            }
            for (; ; b = read())
            {
                if (b < '0' || '9' < b)
                    return ng ? -ret : ret;
                ret = ret * 10 + b - '0';
            }
        }

        public int Integer()
        {
            return (isEof) ? int.MinValue : (int)Long();
        }

        public double Double()
        {
            var s = Scan();
            return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN;
        }

        static T[] enumerate<T>(int n, Func<T> f)
        {
            var a = new T[n];
            for (int i = 0; i < n; ++i) a[i] = f();
            return a;
        }

        public char[] Char(int n)
        {
            return enumerate(n, Char);
        }

        public string[] Scan(int n)
        {
            return enumerate(n, Scan);
        }

        public double[] Double(int n)
        {
            return enumerate(n, Double);
        }

        public int[] Integer(int n)
        {
            return enumerate(n, Integer);
        }

        public long[] Long(int n)
        {
            return enumerate(n, Long);
        }
    }

    public class Printer : StreamWriter
    {
        public override IFormatProvider FormatProvider
        {
            get { return CultureInfo.InvariantCulture; }
        }

        public Printer(Stream stream)
            : base(stream, new UTF8Encoding(false, true))
        {
        }

        public Printer(Stream stream, Encoding encoding)
            : base(stream, encoding)
        {
        }

        public void Write<T>(string format, T[] source)
        {
            base.Write(format, source.OfType<object>().ToArray());
        }

        public void WriteLine<T>(string format, T[] source)
        {
            base.WriteLine(format, source.OfType<object>().ToArray());
        }
    }

    #endregion

}