def build_model(hp):
    return (((((- 1) * (hp['a'] ** 3)) + (hp['b'] ** 3)) + hp['c']) - abs(hp['d']))
def build_model(hp):
    return (((((- 1) * (hp['a'] ** 3)) + (hp['b'] ** 3)) + hp['c']) - abs(hp['d']))