题解 | #称砝码#

while True:
    try:
        n = int(input())
        m = list(map(int, input().split()))
        x = list(map(int, input().split()))
        l1 = []
        for i in range(n):
            for j in range(x[i]):
                l1.append(m[i])
        l2 = {0}
        for i in l1:
            for j in list(l2):
                l2.add(i + j)
        print(len(l2))
    except:
        break