#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 计算最大收益
# @param prices int整型一维数组 股票每一天的价格
# @return int整型
#
class Solution:
    def maxProfit(self , prices: List[int]) -> int:
        # write code here
        n= len(prices)
        g = [0]*n
        num = 0
        for i in range(1,n):
            g[i] = prices[i] - prices[i-1]
        for i in range(1,n):
            if g[i] >= 0 :
                num += g[i]
        return num