题解 | #整数与IP地址间的转换#

n = int(input())
farmar_weight = input().split(' ')
count = input().split(' ')
weight_list = []
for i in range(n):
    for j in range(int(count[i])):
        weight_list.append(int(farmar_weight[i]))
total_weight = {0}
for i in weight_list:
    for j in list(total_weight):
        total_weight.add(i+j)
print(len(total_weight))