class Input(object):

    def __init__(self, p_value, p_weight):
        self.value = p_value
        self.weight = p_weight

    def print(self):
        print("value: %f\tweight: %f" % (self.value, self.weight))

    def set_weight(self, p_weight):
        self.weight = p_weight

    def output(self):
        return self.value * self.weight