def countChange(money: Int, coins: List[Int]): Int = {
    def countAcross(money: Int, coins: List[Int], index: Int): Int = {
        if(index < coins.length)
            countVertical(money - coins(index), coins, index) +
            countAcross(money, coins, index + 1)
        else
            0

    }

    def countVertical(money: Int, coins: List[Int], index: Int): Int = {
        if(money == 0)
            1
        else if(money < 0)
            0
        else
            countVertical(money - coins(index), coins, index) +
            countAcross(money, coins, index + 1)

    }

    countVertical(money, coins, 0)


}