#include <functional>#include <iostream>#include <vector>#include <algorithm>using namespace std;int maxProfitWithTwoTransactions(const std::vector<int>&amp; prices) { int n = prices.size(); if (n <= 1) return 0; std::vector<int> left(n, 0); std::vector<int> right(n, 0); int minPrice = prices[0]; for (int i = 1; i < n; ++i) { minPrice = std::min(minPrice, prices[i]);//状态1：以低价买入 left[i] = std::max(left[i - 1], prices[i] - minPrice);//状态2：如果存在利润，则卖出（完成了一次交易），否则持有(状态3) } int maxPrice = prices[n - 1]; for (int i = n - 2; i >= 0; --i) { maxPrice = std::max(maxPrice, prices[i]);//状态4：第二次买入 right[i] = std::max(right[i + 1], maxPrice - prices[i]);//状态5：如果存在利润，则卖出，否则持有（状态3） } int maxProfit = 0; for (int i = 0; i < n; ++i) { maxProfit = std::max(maxProfit, left[i] + right[i]); } return maxProfit;}int main() { int n; cin >> n; vector<int>price(n, 0); for (int i = 0; i < n; i++) { cin >> price[i]; } cout << maxProfitWithTwoTransactions(price); return 0;}这是怎么能运行的？？我的注释不一定对，可以忽略#C++笔试题##C++面试题##C++##C++刷题#
