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

class Solve
{
	const int mod = 1000000007;
	static void Main(string[] args)
	{
		var input = Console.ReadLine().Split().Select(int.Parse).ToArray();
		int x = input[0];
		int y = input[1];
		string ans = "No";
		List<int> a = new List<int>{ 1, 3, 5, 7, 8, 10, 12 };
		List<int> b = new List<int>{ 4, 6, 9, 11 };
		List<int> c = new List<int>{ 2 };
		if ((a.Contains(x) && a.Contains(y))||(b.Contains(x)&&b.Contains(y))||(c.Contains(x)&&c.Contains(y)))
            { ans = "Yes"; }
		Console.WriteLine(ans);
	}
}