Problem:
Score : 400 points

Problem Statement

We have a sequence of length N, a = (a_1, a_2, ..., a_N).
Each a_i is a positive integer.

Snuke's objective is to permute the element in a so that the following condition is satisfied:

For each 1 ≤ i ≤ N - 1, the product of a_i and a_{i + 1} is a multiple of 4.

Determine whether Snuke can achieve his objective.

Constraints

2 ≤ N ≤ 10^5

a_i is an integer.

1 ≤ a_i ≤ 10^9

Input

Input is given from Standard Input in the following format:

N
a_1 a_2 ... a_N

Output

If Snuke can achieve his objective, print Yes; otherwise, print No.

Sample Input 1

3
1 10 100

Sample Output 1

Yes

One solution is (1, 100, 10).

Sample Input 2

4
1 2 3 4

Sample Output 2

No

It is impossible to permute a so that the condition is satisfied.

Sample Input 3

3
1 4 1

Sample Output 3

Yes

The condition is already satisfied initially.

Sample Input 4

2
1 1

Sample Output 4

No

Sample Input 5

6
2 7 1 8 2 8

Sample Output 5

Yes

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;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int length = int.Parse(Console.ReadLine());
            string[] input = Console.ReadLine().Split(' ');
            int[] nums = new int[input.Length];
            for(int i = 0; i < input.Length; i++)
            {
                nums[i] = int.Parse(input[i]);
            }
            //int[] canFour = new int[1];
            //int[] canTwo = new int[1];
            int fourCount = 0;
            int twoCount = 0;
            int odd = 0;
            foreach(int n in nums)
            {
                if(n % 4 == 0)
                {
                   // canFour[fourCount] = n;
                    fourCount++;
                }else if(n % 2 == 0)
                {
                    //canTwo[twoCount] = n;
                    twoCount++;
                }
                else
                {
                    odd++;
                }
            }
            if(fourCount >= (nums.Length / 2))
            {
                Console.WriteLine("Yes");
            }else if((fourCount + twoCount / 2) >= Math.Ceiling((double)nums.Length / 2))
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
            
            Console.WriteLine(Math.Ceiling((double)nums.Length / 2));
           
                
            
        }
    }
}