public class Employee
{
    public string Name { get; set; }
    public decimal Salary { get; set; }
    public decimal Bonus { get; set; }

    public string Country { get; set; }

    public override string ToString()
    {
        var total = Salary + Bonus;
        return $"{Name} - Salario: {Salary.ToString("C2")} - Bonus: {Bonus.ToString("C2")} - Total: {total.ToString("C2")}";
    }
}

class Program
{
    public static List<Employee> Employees = new List<Employee>()
    {
        new Employee() {Country = "Russia", Name = "Pavlov", Salary = 2850m, Bonus = 100m},
        new Employee() {Country = "Russia", Name = "Dimitri", Salary = 1940m, Bonus = 300m},
        new Employee() {Country = "Brazil", Name = "Nikolai", Salary = 2780m, Bonus = 150m},
        new Employee() {Country = "Brazil", Name = "Russell", Salary = 2400m, Bonus = 0m},
        new Employee() {Country = "UK", Name = "Kriger", Salary = 6550m, Bonus = 200m},
        new Employee() {Country = "US", Name = "Yure", Salary = 4800m, Bonus = 300m},
        new Employee() {Country = "US", Name = "Mikhail", Salary = 4100m, Bonus = 300m},
    };

    public static decimal GetSalaryAverage()
    {
       /* var result = (from e in Employees
                     select e.Salary).Average();*/

        return Employees.Average(e => e.Salary);
    }

    public static IEnumerable<Employee> GetEmployeesWithSalaryAboveAverage()
    {
        var avg = GetSalaryAverage();

        /*var query = (from e in Employees
                    where e.Salary > avg
                    select e).ToList();*/

        var result = Employees.Where(x => x.Salary > avg).ToList();

        return result;
    }

    public static IEnumerable<Employee> GetOrderdEmployeesByTotal()
    {
        var result = Employees.OrderBy(x => x.Salary + x.Bonus).ToList();

        return result;
    }

    public static Employee GetEmployeeWithLowestSalary()
    {
        return Employees.OrderBy(x => x.Salary).FirstOrDefault();
    }

    public static IEnumerable<Employee> AdjustSalaryAndBonus(decimal percent)
    {
        var avg = GetSalaryAverage();

        var employees = Employees.Where(x => x.Salary < avg).ToList();

        foreach (var employee in employees)
        {
            employee.Salary *= 1 + percent;
            employee.Bonus *= 1 + percent;
        }

        return Employees;
    }

public static void Group()
{
        var groups = Employees.GroupBy(x => x.Country);

        foreach (var g in groups)
        {
            Console.WriteLine(g.Key + " Salario Medio: " + g.Average(x => x.Salary));
        }
}

    static void Main(string[] args)
    {
        Console.WriteLine("Employees");
        Console.WriteLine("----------------------------------------------");

        Console.WriteLine("Average Salary: {0}", GetSalaryAverage().ToString("C2"));
        Console.WriteLine();

        Console.WriteLine("Employees with salary above average");
        var employeesWithSalaryAbove = GetEmployeesWithSalaryAboveAverage();

        foreach (var employee in employeesWithSalaryAbove)
        {
            Console.WriteLine(employee);
        }

        Console.WriteLine("Employees ordered by total");
        var employeesOrderedByTotal = GetOrderdEmployeesByTotal();

        foreach (var employee in employeesOrderedByTotal)
        {
            Console.WriteLine(employee);
        }

        Console.WriteLine("Lowest Salary:");
        Console.WriteLine(GetEmployeeWithLowestSalary());

        Console.WriteLine("Employees with 15% adjust");
        var adjustedEmployees = AdjustSalaryAndBonus(0.15m);

        foreach (var employee in adjustedEmployees)
        {
            Console.WriteLine(employee);
        }

        var avg = GetSalaryAverage();

        var employees = Employees.Select(x =>
        {
            if (x.Salary < avg)
            {
                x.Salary *= 1 + 0.15m;
                x.Bonus *= 1 + 0.15m;
            }

            return x;
        });

        foreach (var employee in employees)
        {
            Console.WriteLine(employee);
        }

        Console.ReadLine();
    }
}