还忘记subarray不能为空吃了一个WA
要是这是面试我已经死了
def maxSum(self, nums: List[int]) -> int:
a = set()
b = -1000
for num in nums:
if num>0 and num not in a:
a.add(num)
if num<=0 and num>b:
b = num
return sum(a) if len(a)>0 else b