Exam 2. Odd / Even Sum

namespace _2.OddAndEvenSum
{
    using System;

    public class TheSumsFromOddAndEvenNumbersAreEquals
    {
        public static void Main(string[] args)
        {
            checked
            {
                int numN = int.Parse(Console.ReadLine());
                long sumOdd = 0;
                long sumEven = 0;

                // Reads all numbers in sequence from input and checks their positions odd or even:
                for (int i = 0; i < (2 * numN); i++)
                {
                    int number = int.Parse(Console.ReadLine());
                    // If number position is even, adds number to sumEven, else adds number to sumOdd:
                    bool numIsOnEvenPosition = (i + 1) % 2 == 0;
                    if (numIsOnEvenPosition)
                    {
                        sumEven += number;
                    }
                    else
                    {
                        sumOdd += number;
                    }
                }

                // Comparing two calculated sums:
                bool sumsAreEquals = sumOdd == sumEven;

                // If two sums are not equals, will calculating their difference:
                if (!sumsAreEquals)
                {
                    long diff = Math.Abs(sumOdd - sumEven);

                    // Print result:
                    Console.WriteLine("No, diff={0}", diff);
                }
                else
                {
                    // Print result:
                    Console.WriteLine("Yes, sum={0}", sumOdd);
                }
            }
        }
    }
}