Retirement

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Retirement
{
    class Program
    {
        static void Main(string[] args)
        {
            string Gender = Console.ReadLine().ToLower();
            int Age = int.Parse(Console.ReadLine());
            int WorkingExperience = int.Parse(Console.ReadLine());

            if (Gender != "male" && Gender != "female" || Age <= 1 || Age >= 10000 || WorkingExperience <= 1 || WorkingExperience >= 10000)
            {
                Console.WriteLine("Invalid input.");
            }
            else
            {
                // male
                bool CheckAllGood = Age >= 64 && WorkingExperience >= 38;
                bool CheckAge = Age < 64 && WorkingExperience >= 38;
                bool CheckWorkingExperience = Age >= 64 && WorkingExperience < 38;
                bool CheckAgeAndExperience = Age < 64 && WorkingExperience < 38;

                // female
                bool CheckAllGoodFemale = Age >= 61 && WorkingExperience >= 35;
                bool CheckAgeFemale = Age < 61 && WorkingExperience >= 35;
                bool CheckWorkingExperienceFemale = Age >= 61 && WorkingExperience < 35;
                bool CheckAgeAndExperienceFemale = Age < 61 && WorkingExperience < 35;

                if ((Gender == "male" && CheckAllGood) || (Gender == "female" && CheckAllGoodFemale))
                {
                    Console.WriteLine("Ready to retire at " + Age + " and " +
                        WorkingExperience + " years of experience!");
                }

                if ((Gender == "male" && CheckAge) || (Gender == "female" && CheckAgeFemale))
                {
                    switch (Gender)
                    {
                        case "male":
                            Console.WriteLine("Worked enough, but not old enough. " +
                         "Years left to retirement: " + (64 - Age) + ".");
                            break;
                        case "female":
                            Console.WriteLine("Worked enough, but not old enough. " +
                         "Years left to retirement: " + (61 - Age) + ".");
                            break;
                    }
                }
                if ((Gender == "male" && CheckWorkingExperience) || (Gender == "female" && CheckWorkingExperienceFemale))
                {
                    switch (Gender)
                    {
                        case "male":
                            Console.WriteLine("Old enough, but haven't worked enough. Work experience left to retirement: "
                                + (38 - WorkingExperience) + ".");
                            break;
                        case "female":
                            Console.WriteLine("Old enough, but haven't worked enough. Work experience left to retirement: "
                                + (35 - WorkingExperience) + ".");
                            break;
                    }
                }
                if ((Gender == "male" && CheckAgeAndExperience) || (Gender == "female" && CheckAgeAndExperienceFemale))
                {
                    switch (Gender)
                    {
                        case "male":
                            Console.WriteLine("Too early. Years left to retirement: " + (64 - Age) + ". " +
                                "Work experience left to retirement: " + (38 - WorkingExperience) + ".");
                            break;
                        case "female":
                            Console.WriteLine("Too early. Years left to retirement: " + (61 - Age) + ". " +
                                "Work experience left to retirement: " + (35 - WorkingExperience) + ".");
                            break;
                    }
                }
            }
        }
    }
}