public class Unit {
    static final int MAX_HP = 100;
    static final int MIN_HP = 0;
    int hp;
    public Unit(){
        hp = MIN_HP;
    }
    public void play(int pcnt){
        setHp(hp+pcnt);
    }
    private void setHp(int value) {
        if(value>MAX_HP){
            value = MAX_HP;
        }
        if(value<MIN_HP){
            value = MIN_HP;
        }
        hp = value;
    }
    public int getHp(){
        return hp;
    }
}