/*
import java.util.*;
import edu.neu.ccs.demeter.dj.*;
*/

Trip = "trip" <dayTrips> DayTripList .
DayTripList : EDayTripList | NDayTripList.
EDayTripList = "end".
NDayTripList = <first> DayTrip <rest> DayTripList.
DayTrip = "day" <day> Day <kind> DTKind  <locations> LocationList.
LocationList : ELocationList | NLocationList.
ELocationList = "-".
NLocationList = <first> Location <rest> LocationList.
DTKind : Luxury | NE.
NE : Normal | Economy .
Luxury = "luxury".
Normal = "normal".
Economy = "economy".
Location = <s> String.
Day = <n> Integer.

Main = .