def cheng(a):
    temp = 1
    for i in a:
        temp *= int(i)
    return temp


def jia(b):
    return sum(b)


def jian(c):
    total = int(c[0])
    for i in c[1:]:
        total -= int(i)
    return total


while 1:
    string = input()
    if string == 'END':
        break
    res = []
    final = []
    jia_list = string.split('+')
    for item in jia_list:
        jian_list = item.split('-')
        res.append(jian_list)
    for j in res:
        if len(j) == 1:
            final.append(cheng(j[0].split('*')))
        else:
            for k, v in enumerate(j):
                j[k] = cheng(v.split('*'))
            final.append(jian(j))
    print(jia(final))

唯一AC的一道题。。
写的不美观，将就着看吧