var cars = new List<Car>();

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

for (int i = 0; i < n; i++)
{
    string[] cmd = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries);

    string model = cmd[0];
    int engineSpeed = int.Parse(cmd[1]);
    int enginePower = int.Parse(cmd[2]);
    int cargoWeight = int.Parse(cmd[3]);
    string cargoType = cmd[4];

    var engine = new Engine()
    {
            EngineSpeed = engineSpeed,
            EnginePower = enginePower
    };
    var cargo = new Cargo()
    {
        CargoWeight = cargoWeight,
        CargoType = cargoType
    };

    var car = new Car(model, engine, cargo);

    cars.Add(car);
}

string crgType = Console.ReadLine();

if(crgType == "fragile")
{
    foreach (var car in cars.Where(x => x.Cargo.CargoType == "fragile" &&
                                        x.Cargo.CargoWeight < 1000))
    {
    Console.WriteLine($"{car.Model}");
    }

}
else if (crgType == "flamable")
{
    foreach (var car in cars.Where(x => x.Cargo.CargoType == "flamable" &&
                                        x.Engine.EnginePower > 250))
    {
        Console.WriteLine($"{car.Model}");
    }
}

public class Car
{
    public Car(string Mdl, Engine engine, Cargo cargo)
    {
        Model = Mdl;
        Engine = engine;
        Cargo = cargo;
    }

    public string Model { get; set; }

    public Engine Engine { get; set; }

    public Cargo Cargo { get; set; }
}

public class Engine
{
    public int EngineSpeed { get; set; }

    public int EnginePower { get; set; }
}

public class Cargo
{
    public int CargoWeight { get; set; }

    public string CargoType { get; set; }
}