题解 | #称砝码#

while True:
    try:
        n = int(input())
        mList = list(map(int, input().split()))
        xList = list(map(int, input().split()))
        lst = []
        for i in zip(mList, xList):
            lst += [i[0]] * i[1]
        weights = {0}
        for i in lst:
            for j in list(weights):
                weights.add(i+j)
        print(len(weights))
    except:
        break