Zig-Zag Arrays

using System;
using System.Linq;

namespace _03_ZigZagArrays
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string firstRow = "";
            string secondRow = "";
            string firstRowOutput = "";
            string secondRowOutput = "";
            for (int i = 1; i <= n; i++)
            {
                string[] array = Console.ReadLine().Split().ToArray();
                if (i % 2 != 0)
                {
                    firstRow = array[0];
                    secondRow = array[1];
                }
                else if(i % 2 == 0)
                {
                    firstRow = array[1];
                    secondRow = array[0];
                }
                firstRowOutput += firstRow + " ";
                secondRowOutput += secondRow + " ";
            }
            Console.WriteLine(firstRowOutput);
            Console.WriteLine(secondRowOutput);
        }
    }
}