using System;

namespace ConsoleApp2
{
    class Program
    {
        static int returnIndex(int i, int value, int[] y)
        {
            if (i > 29)
                return -1;
            else if (i % 3 == 0 && value < 0 && y[i] == -999)
                return i;
            else if (i % 3 == 1 && value == 0 && y[i] == -999)
                return i;
            else if (i % 3 == 2 && value > 0 && y[i]==-999)
                return i;
            else
                return returnIndex(++i, value,y);

        }
        static void Main(string[] args)
        {
            /*
             * Trvac e vector -0+
             */
            int k = 0;
            int[] x = new int[10];
            int[] y = new int[10*3];

            for (int i = 0; i < x.Length; i++)
            {
                x[i] = new Random().Next(-5, 5);
                x[2] = 0;
                Console.Write($"{x[i]} ");
            }
            for (int i = 0; i < y.Length; i++)
            {
                y[i] = -999;
            }
            Console.WriteLine();
            for (int i = 0; i < x.Length; i++)
            {
                if (x[i] < 0)
                {
                    k = returnIndex(0, x[i],y);
                    y[k] = x[i];
                }
                else if (x[i] == 0)
                {
                    k = returnIndex(0, x[i],y);
                    y[k] = x[i];

                }
                else if (x[i] > 0)
                {
                    k = returnIndex(0, x[i],y);
                    y[k] = x[i];

                }
            }
            for (int i = 0; i < y.Length; i++)
            {
                if (y[i] != -999)
                {
                    Console.Write(y[i] + " ");
                }
            }
            ////0 -1 2 3 -4 0 1


        }
    }
}