def cal(sentence):
    if sentence == "chicken" or sentence == "narrr":
        return 0
    return eval(sentence)






70a304cd42097d96a8633c39818f46186f077f48
<mask token>

def cal(sentence):
    if sentence == 'chicken' or sentence == 'narrr':
        return 0
    return eval(sentence)

def cal(sentence):
    if sentence == "chicken" or sentence == "narrr":
        return 0
    return eval(sentence)





