class Server {
	private final int id;
	private final boolean avail;
	private final boolean anyoneWaiting;
	private final double whenFree;

	Server(int identifier, boolean isAvailable, boolean hasWaitingCustomer, double nextAvailableTime){
		this.id = identifier;
		this.avail = isAvailable;
		this.anyoneWaiting = hasWaitingCustomer;
		this.whenFree = nextAvailableTime;
	}

	int servergiveID() {
		return id;
	}

	boolean giveAvail() {
		return avail;
	}

	boolean giveWaiting() {
		return anyoneWaiting;
	}

	double giveFree() {
		return whenFree;
	}

	public String toString() {
		if (avail) {
			return String.format("%d is available", id);
		} else if (anyoneWaiting) {
			return String.format("%d is busy; waiting customer to be served at %.3f", id, whenFree);
		} else {
			return String.format("%d is busy; available at %.3f", id, whenFree);
		}
	}
}