Program.cs

using System;
using System.Collections.Generic;

namespace _2021
{
    class Program
    {
        static void Main(string[] args)
        {
            // Console.WriteLine("Day 1:");
            // run_1.run();

            // Console.WriteLine("Day 2:");
            // run_2.run_part_1();
            // run_2.run_part_2();

            // Console.WriteLine("Day 3:");
            // run_3.run_part_1();
            // run_3.run_part_2();

            // Console.WriteLine("Day 4:");
            // run_4.run_part_1();
            // run_4.run_part_2();

            // Console.WriteLine("Day 5:");
            // run_5.run_part_1();
            // run_5.run_part_2();

            // Console.WriteLine("Day 6:");
            // run_6.run_part_1();
            // run_6.run_part_2();

            // Console.WriteLine("Day 7:");
            // run_7.run_part_1();
            // run_7.run_part_2();

            // Console.WriteLine("Day 8:");
            // run_8.run_part_1();
            // run_8.run_part_2();

            Console.WriteLine("Day 9:");
            run_9.run_part_1();
            run_9.run_part_2();

        }
    }
}