def countChange(money: Int, coins: List[Int]): Int = {
                def loop(amountChange: Int, coins: List[Int]):Int = {
                        if (amountChange > money) 0
                        else if (amountChange == money) 1
                        else {
                                loop(amountChange + coins.head, coins) +
                                        (if (coins.size > 1) loop(amountChange + coins.tail.head, coins.tail)
                                        else 0)
                        }
                }
                loop(0,coins)
        }