题解 | 称砝码
称砝码
https://www.nowcoder.com/practice/f9a4c19050fc477e9e27eb75f3bfd49c
n = int(input())
m = list(map(int,input().split()))
x = list(map(int,input().split()))
w = {0}
for i in range(n):
for j in range(x[i]):
w1 = [k+m[i] for k in w]
w.update(w1)
print(len(w))