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: Accepted)

using System;
using System.Linq;

namespace atcoderA
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            int[] line = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
            int x = line[0];
            int y = line[1];
            Console.WriteLine(getN(x) == getN(y) ? "Yes" : "No");
        }

        public static int getN(int a)
        {
            int[] array = new int[] { 4, 6, 9, 11 };
            int group = 0;
            if (a == 2)
            {
                group = 1;
            }
            else if (array.Contains(a))
            {
                group = 2;
            }
            else
            {
                group = 3;
            }
            return group;
        }
    }
}