legalTender.scala

object legalTender extends App {
    val yenCoins = List(1
                    ,5
                    ,10
                    ,50
                    ,100
                    ,500)
    val yenMax = 20
    
    def sumCoins(max: Int)(coins: List[Int]): Int = coins.map(_ * max).sum
    
    println(sumCoins(yenMax)(yenCoins))
}