using System;

public class Program

{

    public class Employee

{

    private string name;

    private int salary;

    private bool isMale;

    public Employee(string name, int salary, bool isMale)

    {

        if (string.IsNullOrEmpty(name))

        {

            Console.WriteLine("Name must be longer than 0 characters.");

        }

        if (salary <= 0)

        {

            Console.WriteLine("Salary must be positive.");

        }

​

        this.name = name;

        this.salary = salary;

        this.isMale = isMale;

    }

​

    public string Name

    {

        get { return name; }

        set

        {

            if (string.IsNullOrEmpty(value))

            {

                Console.WriteLine("Name must be longer than 0 characters.");

            }

            name = value;

        }

    }

​

    public int Salary

    {

        get { return salary; }

        set

        {

            if (value <= 0)

            {

                Console.WriteLine("Salary must be positive.");

            }

            salary = value;

        }

    }

    public bool IsMale

    {

        get { return isMale; }

        set { isMale = value; }

    }

    public bool IsHighSalary()

    {

        return salary > 20000;

    }

​

    public override string ToString()

    {

        return $"Name: {name}, Salary: {salary}, Is Male: {isMale}, High Salary: {IsHighSalary()}";

    }

}

public class Program

{

    public static void Main(string[] args)

    {

        Employee emp1 = new Employee("itay", 25000, false);

        Employee emp2 = new Employee("itchik", 18000, true);

        Employee emp3 = new Employee("yossi", 22000, true);

        Console.WriteLine(emp1);

        Console.WriteLine(emp2);

        Console.WriteLine(emp3);

​

        emp1.Name = "ram";

        emp2.Salary = 20000;

​

        Console.WriteLine(emp1);

        Console.WriteLine(emp2);

​

        int totalSalary = emp1.Salary + emp2.Salary + emp3.Salary;

        Console.WriteLine($"Total Salary of all employees: {totalSalary}");

    }

}

}