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

namespace _01.SoftUniAirlines
{
    class softUniArilines
    {
        static void Main(string[] args)
        {

            //•	adult passengers count
            //•	adult ticket price
            //•	youth passengers count
            //•	youth ticket price
            //•	fuel price per hour
            //•	fuel consumption per hour
            //•	flight duration

            int cnt = int.Parse(Console.ReadLine());

            decimal lost = 0;
            decimal profit = 0;
            for (int i = 0; i <cnt; i++)
            {
                long adultPassengers = long.Parse(Console.ReadLine());
                decimal adultTicketPrice = decimal.Parse(Console.ReadLine());
                long youthPassengers = long.Parse(Console.ReadLine());
                decimal youthTicket = decimal.Parse(Console.ReadLine());
                decimal fuelPrice = decimal.Parse(Console.ReadLine());
                decimal fuelConsumptioPerH = decimal.Parse(Console.ReadLine());
                int  flightDuration = int.Parse(Console.ReadLine());

                decimal totalTickets = (adultPassengers * adultTicketPrice) + (youthPassengers * youthTicket);
                decimal priceOfFlight = fuelConsumptioPerH * flightDuration * fuelPrice;

                if (totalTickets>=priceOfFlight)
                {
                    profit += totalTickets - priceOfFlight;
                    Console.WriteLine($"You are ahead with {profit:f3}$.");

                }
                else
                {
                    lost +=totalTickets- priceOfFlight ;
                    Console.WriteLine($"We've got to sell more tickets! We've lost {lost:f3}$.");

                }
            }

                 decimal overall = profit + lost;
                Console.WriteLine($"Overall profit -> { overall:f3}$.");
                Console.WriteLine($"Average profit -> { overall / cnt:f3}$.");






        }
    }
}