def max_profit(prices):
    profit = 0
    for i in range(1, len(prices)):
        if prices[i] > prices[i - 1]:
            profit += prices[i] - prices[i - 1]
    return profit


if __name__ == "__main__":
    print(max_profit([7, 1, 5, 3, 6, 4]))
    print(max_profit([1, 2, 3, 4, 5]))
    print(max_profit([7, 6, 4, 3, 1]))