import java.util.*;

public class Nim implements Jeu {
     
    private int [] paquets;
    private int nCoupsEffectues = 0;

    public Nim(int [] paquets) {
	this.paquets = paquets;
    }

    public Reponse jouer(Coup coup) throws CoupInvalideException {
	CoupNim cn = (CoupNim) coup;
	int paquet = cn.paquet();
	int qte = cn.quantite();

	if (paquet >= paquets.length || qte > paquets[paquet] || qte == 0) {
	    throw new CoupInvalideException(nCoupsEffectues, coup);
	}
	paquets[paquet] -= qte;
	return new ReponseNim(paquets);
    }
}