Even Try - HackerRank - Graph problem - study code - very short, figure out the design

EvenTryStudy1.cs

using System;
using System.Collections.Generic;
namespace Solution
{
    class Solution
    {
        static void Main(string[] args)
        {
            var line1 = Console.ReadLine().Trim().Split(' ');
            var vTotal = int.Parse(line1[0]);
            var eTotal = int.Parse(line1[1]);

            int[] vPoint = new int[vTotal];
            int[] vParent = new int[vTotal];

            for (int i = 0; i < eTotal; i++)
            {
                var line = Console.ReadLine().Trim().Split(' ');

                int vPo = int.Parse(line[0]);
                int vPa = int.Parse(line[1]);

                vPoint[vPo - 1] = 1;
                vParent[vPo - 1] = vPa;
                                
                while (vPa != 1)
                {
                    vPoint[vPa - 1]++;
                    vPa = vParent[vPa - 1];
                }
            }

            int m = 0;
            for (int i = 1; i < vPoint.Length; i++)
            {
                if (vPoint[i] % 2 == 0)
                    m++;
            }
            Console.WriteLine(m);
        }
    }
}