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: Time Limit Exceeded)

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

public class MainApp
{
    static public void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        long[] a = Console.ReadLine().Split(' ').Select(long.Parse).ToArray();
        string output = "";
        if (n % 2 != 0)
        {
            output = a[0].ToString();
            for (int i = 1; i <= a.Length; i+=2)
            {
                try
                {
                    output = output + " " + a[i];//b.Add(a[i]);
                    output = a[i + 1] + " " + output;//b.Insert(0, a[i]);
                }
                catch
                {

                }

            }
        }
        else
        {
            output = a[0].ToString();
            for (int i = 1; i <= a.Length; i += 2)
            {
                try
                {
                    output = a[i] + " " + output;//b.Insert(0, a[i]);
                    output = output + " " + a[i + 1];//b.Add(a[i]);

                }
                catch
                {

                }


            }

        }

        Console.WriteLine(output);

    }

}