using System;

public class Heaper

{

    void heapify(int[] arr, int n, int i)

    {

        int largest = i;

        int l = 2 * i + 1;

        int r = 2 * i + 2;

        if(l < n && arr[l] > arr[largest])

            largest = l;

        if(r < n && arr[r] > arr[largest])

            largest = r;

        if(largest != i)

        {

            int swap = arr[i];

            arr[i] = arr[largest];

            arr[largest] = swap;

        }

        heapify(arr, n, largest);

    }

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}