题解 | #称砝码#

while True:
    try:
        data1 = int(input())
        data2 = list(map(int,input().split()))
        data3 = list(map(int,input().split()))
        #存储所有的砝码
        list1 = []
        for m in range(len(data2)):
            for n in range(data3[m]):
                list1.append(data2[m])
        
        list2 = [0]
        temp = []
        for word1 in list1:
            temp = set(list2)
            for word2 in temp:
                list2.append(word1+word2)
        print(len(set(list2)))
    except:
        break