SoftUniAirline

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

namespace _01.SoftUniAirline
{
    class Program
    {
        static void Main(string[] args)
        {

            int n = int.Parse(Console.ReadLine());
            int adultPassengersCount = 0;
            decimal adultticketPrice = 0;
            int youthPassengersCount = 0;
            decimal youthTicketPrice = 0;
            decimal fuelPricePerHours = 0;
            decimal fuelConsumptionPerHour = 0;
            int flightDuration = 0;

            decimal income = 0;
            decimal expenses = 0;
            decimal profit = 0;
            decimal totalIncome = 0;
            decimal averageIncome = 0;
            //(adult passengers count * adult ticket price) + (youth passengers count * youth ticket price)
            //(flight duration * (fuel consumption * fuel price))
            for (int i = 0; i < n; i++)
            {
                adultPassengersCount = int.Parse(Console.ReadLine());
                adultticketPrice = decimal.Parse(Console.ReadLine());
                youthPassengersCount = int.Parse(Console.ReadLine());
                youthTicketPrice = decimal.Parse(Console.ReadLine());
                fuelPricePerHours = decimal.Parse(Console.ReadLine());
                fuelConsumptionPerHour = decimal.Parse(Console.ReadLine());
                flightDuration = int.Parse(Console.ReadLine());

                income = ((decimal)adultPassengersCount*adultticketPrice) + (youthPassengersCount*youthTicketPrice);
                expenses = flightDuration*(fuelConsumptionPerHour*fuelPricePerHours);
                profit = income - expenses;
                if (income>=expenses)
                {
                    Console.WriteLine("You are ahead with {0:F3}$.",profit);
                }
               else if (expenses>income)
               {
                   Console.WriteLine("We've got to sell more tickets! We've lost {0:f3}$.",profit);
               }
                totalIncome += profit;
            }

            Console.WriteLine("Overall profit -> {0:F3}$.",totalIncome);
            Console.WriteLine("Average profit -> {0:F3}$.", totalIncome/n);


        }
    }
}