using System;

public class Program

{

    public static void Main()

    {

        float age;

        float lenght;

        float weight;

        char ct;

        float vaccine;

        do{

        Console.Write("Age :");

            age = float.Parse(Console.ReadLine());

        Console.Write("Lengt :");

            lenght =float.Parse(Console.ReadLine());

        Console.Write("Weigth :");

            weight =float.Parse(Console.ReadLine());

        if(lenght>60)

        {

        vaccine = 10*weight+6;

            Console.WriteLine("The dog need {0:n} cc of vaccine.",vaccine);

        }

        if(age<2 && lenght<30)

        {

            vaccine = 10*weight/2 ;

            Console.WriteLine("The dog need {0:n} cc of vaccine.",vaccine);

        }

        if(lenght <=60 && lenght >=30 && age >=2)

            {

                vaccine = 10*weight;

                Console.WriteLine("The dog need {0:n} cc of vaccine.",vaccine);

            }

        Console.Write("Do you want to continue [y/n] :");

            ct = char.Parse(Console.ReadLine());

        Console.WriteLine("================================================");

        }while(ct=='y');

    }

}