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.Collections.Generic;
using System.Linq;

namespace A___Grouping
{
    class Program
    {
        static void Main(string[] args)
        {
            var x_y = Console.ReadLine().Split().Select(int.Parse).ToArray();
            var group = new List<int[]>();
            group.Add(new int[] { 1, 3, 5, 7, 8, 10, 12 });
            group.Add(new int[] { 4, 6, 9, 11 });
            group.Add(new int[] { 2 });

            foreach (var g in group)
            {
                if (g.Contains(x_y[0]) && g.Contains(x_y[1]))
                {
                    Console.WriteLine("Yes");
                    return;
                }
            }
            Console.WriteLine("No");
        }
    }
}