lmy

C++

#include <vector>
using namespace std;

class Solution {
 public:
  int maxProfit(vector<int>& prices) {
    int sum = 0;
    for (int i = 1; i < prices.size(); i++) {
      sum += max(prices[i] - prices[i - 1], 0);
    }
    return sum;
  }
};