You are given an array prices where prices[i] is the price of a given stock on the ith day.
Find the maximum profit you can achieve. You may complete as many transactions as you like (i.e., buy one and sell one share of the stock multiple times) with the following restrictions:
\n\nNote: You may not engage in multiple transactions simultaneously (i.e., you must sell the stock before you buy again).
\n\n\n
Example 1:
\n\n\nInput: prices = [1,2,3,0,2]\nOutput: 3\nExplanation: transactions = [buy, sell, cooldown, buy, sell]\n\n\n
Example 2:
\n\n\nInput: prices = [1]\nOutput: 0\n\n\n
\n
Constraints:
\n\n1 <= prices.length <= 50000 <= prices[i] <= 1000给定一个整数数组prices，其中第 prices[i] 表示第 i 天的股票价格 。
设计一个算法计算出最大利润。在满足以下约束条件下，你可以尽可能地完成更多的交易（多次买卖一支股票）:
\n\n注意：你不能同时参与多笔交易（你必须在再次购买前出售掉之前的股票）。
\n\n\n\n
示例 1:
\n\n\n输入: prices = [1,2,3,0,2]\n输出: 3 \n解释: 对应的交易状态为: [买入, 卖出, 冷冻期, 买入, 卖出]\n\n
示例 2:
\n\n\n输入: prices = [1]\n输出: 0\n\n\n
\n\n
提示：
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