122.The best time for buying and selling stocksII

topic：

122.The best time for buying and selling stocksII.md

Thought：

I can forget that the price will be reduced the price one day after the first day.，Thinking is to build the minimum child。
Then I found that it seems a bit complicated，Have done it again（2023.1.13），I found out that it seems that only one line can be done。

Code：

class Solution:
    def maxProfit(self, prices: List[int]) -> int:
        return sum(max(0, prices[i] - prices[i - 1]) for i in range(1, len(prices)))