using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

public static float [] LeftJoin(float [] v1, float [] v2)

{

    int contatore=0;

    for(int i=0; i<v1.Lenght; i++)

     {

        for(int j=0; 

      }

}