using System.CodeDom.Compiler;

using System.Collections.Generic;

using System.Collections;

using System.ComponentModel;

using System.Diagnostics.CodeAnalysis;

using System.Globalization;

using System.IO;

using System.Linq;

using System.Reflection;

using System.Runtime.Serialization;

using System.Text.RegularExpressions;

using System.Text;

using System;

​

public class Program

{   

    public static string ConvertDateToBinary(string date) {

        var lst = date.Split('-');

        //Converts all elements in lst to binary

        var year = Convert.ToString(Convert.ToInt16(lst[0]), 2);

        var month = Convert.ToString(Convert.ToInt16(lst[1]), 2);

        var day = Convert.ToString(Convert.ToInt16(lst[2]), 2);

        return $"{year}-{month}-{day}";

    }

​

    public static void Main()

    {

        var date = "2080-02-29";

        Console.WriteLine(ConvertDateToBinary(date));

    }

}