using System;

int[] Zogi(int[] numbers, int n)

{

    int m = 0;

    if (numbers.Length % 2 == 1 && n % 2 == 0)

    {

        m = 1 + numbers.Length / 2;

    }

    else

    {

        m = numbers.Length / 2;

    }

    int[] zogiNum = new int[m];

    if (n % 2 == 0)

    {

        for(int i = 0; i < n; i = i + 2)

        {

            zogiNum[i / 2] = numbers[i];

        }

    }

    else

    {

        for (int i = 1; i < n; i = i + 2)

        {

            zogiNum[(i + 1) / 2 ] = numbers[i];

        }

    }

    return zogiNum;

}

int[] DivideByIndex(int[] numbers)

{

    int[] zogi = Zogi(numbers , 2);

    int[] loZogi = Zogi(numbers , 1);

    int[] numbers2 = new int[numbers.Length];

    for(int i = 0; i < zogi.Length; i++)

    {

        numbers2[i] = zogi[i];  

    }

    for(int i = zogi.Length; i < loZogi.Length + zogi.Length; i++)

    {

        numbers2[i] = loZogi[i - zogi.Length];

    }    

    return numbers2;

}