Best Time to Buy and Sell Stock 2.cpp

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