Problem:
Score : 300 points

Problem Statement

You are given an integer sequence of length n, a_1, ..., a_n.
Let us consider performing the following n operations on an empty sequence b.

The i-th operation is as follows:

Append a_i to the end of b.

Reverse the order of the elements in b.

Find the sequence b obtained after these n operations.

Constraints

1 \leq n \leq 2\times 10^5

0 \leq a_i \leq 10^9

n and a_i are integers.

Input

Input is given from Standard Input in the following format:

n
a_1 a_2 ... a_n

Output

Print n integers in a line with spaces in between.
The i-th integer should be b_i.

Sample Input 1

4
1 2 3 4

Sample Output 1

4 2 1 3

After step 1 of the first operation, b becomes: 1.

After step 2 of the first operation, b becomes: 1.

After step 1 of the second operation, b becomes: 1, 2.

After step 2 of the second operation, b becomes: 2, 1.

After step 1 of the third operation, b becomes: 2, 1, 3.

After step 2 of the third operation, b becomes: 3, 1, 2.

After step 1 of the fourth operation, b becomes: 3, 1, 2, 4.

After step 2 of the fourth operation, b becomes: 4, 2, 1, 3.

Thus, the answer is 4 2 1 3.

Sample Input 2

3
1 2 3

Sample Output 2

3 1 2

As shown above in Sample Output 1, b becomes 3, 1, 2 after step 2 of the third operation. Thus, the answer is 3 1 2.

Sample Input 3

1
1000000000

Sample Output 3

1000000000

Sample Input 4

6
0 6 7 6 7 0

Sample Output 4

0 6 6 0 7 7

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

namespace CSharpSample01
{
    

    class Program
    {

        static int[] a;
        static int[] b;


        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());

            a = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToArray();
            b = new int[N];

            if(N % 2 != 0)
            {

                int center = N / 2;

                b[center] = a[0];

                int left = 1;
                int right = 1;

                for(int i = 1; i < N; i++)
                {

                    if(i % 2 == 0)
                    {
                        b[center - left] = a[i];
                        left++;
                    }
                    else
                    {
                        b[center + right] = a[i];
                        right++;
                    }

                }


            }
            else
            {
                int center = N / 2;

                b[center] = a[0];

                int left = 1;
                int right = 1;

                for (int i = 1; i < N; i++)
                {

                    if (i % 2 != 0)
                    {
                        b[center - left] = a[i];
                        left++;
                    }
                    else
                    {
                        b[center + right] = a[i];
                        right++;
                    }

                }

            }

            Console.WriteLine(String.Join(" ", b));

        }
    }
}