09. Sum of Odd Numbers

using System;

namespace SumOfOddNumbers
{
    class Program
    {
        static void Main()
        {
            int num = int.Parse(Console.ReadLine());
            int sum = 0;

            for (int i = 1; i < num * 2; i+=2)
            {
                Console.WriteLine(i);
                sum += i;
            }

            Console.WriteLine($"Sum: {sum}");
        }
    }
}