data class Kid(val wasGood: Boolean, val name: String)

data class Present(val name: String, val count: Int)

data class AssignedPresent(val person: String, val present: String)

fun main(args: Array<String>) {
	val kids = listOf(
        Kid(true, "Lisa"),
        Kid(true, "Maggie"),
        Kid(false, "Bart"),
        Kid(true, "Millhouse"),
        Kid(false, "Nelson"),
        Kid(true, "Ralph")
    )
    val presents = listOf(Present("doll", 1), Present("toy car", 3))
    print(assignPresents(kids, presents))
}


fun assignPresents(kids: List<Kid>, presents: List<Present>): List<AssignedPresent> =
    kids
    	.zip(presents.flatMap { present -> (1..present.count).map { present.name } })
    	{ kid, present -> AssignedPresent(kid.name, present) }