Methods-Ex\More\Multiplication Sign

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

namespace methods_exerci
{
    class Program
    {
        static void Main(string[] args)
        {
            int result = 0;

            Multiplication(result);
        }

        static void Multiplication(int result)
        {

            bool nula = false;
            for (int i = 0; i < 3; i++)
            {
                int number = int.Parse(Console.ReadLine());
                if (number == 0)
                {
                    nula = true;
                }
                if (number < 0)
                {
                    result++;
                }
            }

            if (nula)
            {
                Console.WriteLine("zero");
            }
            else
            {

                if (result % 2 == 0)
                {
                    Console.WriteLine("positive");
                }
                else
                {
                    Console.WriteLine("negative");
                }
            }

        }
    }
}