Problem:
Score : 100 points

Problem Statement

Based on some criterion, Snuke divided the integers from 1 through 12 into three groups as shown in the figure below.
Given two integers x and y (1 ≤ x < y ≤ 12), determine whether they belong to the same group.

Constraints

x and y are integers.

1 ≤ x < y ≤ 12

Input

Input is given from Standard Input in the following format:

x y

Output

If x and y belong to the same group, print Yes; otherwise, print No.

Sample Input 1

1 3

Sample Output 1

Yes

Sample Input 2

2 4

Sample Output 2

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

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

public class Hello
{
    public static Hello hello;

    public static void Main()
    {
        hello = new Hello();
        hello.Run();
    }
    private string[] ReadInputs()
    {
        var line = System.Console.ReadLine();
        return line.Split();
    }


    public void Run()
    {
        IList<int> groupA = new List<int> { 1, 3, 5, 7, 8, 9, 12 };
        IList<int> groupB = new List<int> { 4, 6, 9, 11 };

        int[] inputN = ReadInputs().Select(x => int.Parse(x)).ToArray();
        string answer="";

        if (inputN.Contains(2))
        {
            if(inputN[0] == inputN[1])
            {
                answer = "Yes";
            }else
            {
                answer = "No";
            }
        }

        if( (groupA.Contains(inputN[0]) && groupA.Contains(inputN[1])) 
            || (groupB.Contains(inputN[0]) && groupB.Contains(inputN[1])) ){
            answer = "Yes";
        }else
        {
            answer = "No";
        }

        Console.WriteLine(answer);
    }
}