using System;

public class Program

{

    public static void Main()

    {

        MacroCalculationStrategy strategy = new BottleCalculationStrategy();

        Macro milk = new Macro(10, 5, 10, 300, strategy);

        Console.WriteLine("Quantidade: {0}", milk.Quantity);

        Console.WriteLine(Environment.NewLine);

        Console.WriteLine("Proteína: {0}", milk.Protein);

        Console.WriteLine("Carbohidrato: {0}", milk.Carbohydrate);

        Console.WriteLine("Gordura: {0}", milk.Fat);

    }

    public class Macro {

        public decimal Protein { get; set; }

        public decimal Carbohydrate { get; set; }

        public decimal Fat { get; set; }    

        public decimal Quantity { get; set; }   

        public MacroCalculationStrategy CalculationStrategy { get; set; }

        public Macro(decimal protein, decimal carbohydrate, decimal fat, decimal quantity, MacroCalculationStrategy calculationStrategy) {

            Protein = calculationStrategy.Calculate(quantity, protein);

            Carbohydrate = calculationStrategy.Calculate(quantity, carbohydrate);

            Fat = calculationStrategy.Calculate(quantity, fat);

            Quantity = quantity;

        }

    }

    public abstract class MacroCalculationStrategy {

        public decimal Multiplier { get; set; }

        public MacroCalculationStrategy(decimal multiplier){

            Multiplier = multiplier;

        }

        public abstract decimal Calculate(decimal macro, decimal quantity); 

    }

    public class GramsCalculationStrategy : MacroCalculationStrategy {

        public GramsCalculationStrategy() : base (100) { }

        public override decimal Calculate(decimal macro, decimal quantity) {

            return (macro * quantity) / Multiplier;

        }

    }

        public class BottleCalculationStrategy : MacroCalculationStrategy {

        public BottleCalculationStrategy() : base (1) { }

        public override decimal Calculate(decimal macro, decimal quantity) {

            return (macro * quantity) / 1;

        }

    }

}