题解 | #称砝码#
称砝码
https://www.nowcoder.com/practice/f9a4c19050fc477e9e27eb75f3bfd49c
n = int(input())
weights = list(map(int, input().split()))
counts = list(map(int, input().split()))
s = {0}
for i in range(n):
for _ in range(counts[i]):
for w in list(s): # "freeze" the elements to iterate over regardless of adds.
s.add(weights[i] + w)
print(len(s))
Claude辅助作品，一开始想的是用dfs之类的...
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