SpaceEmergency.scala

val input = "2 20 8 2 3 5"
val normalSpeed = 0.5f
val boostSpeed = 1
val split = input.split(" ").map(_ toInt)
val numBoosters = split(0)
val constructionTime = split(1)
val numStars = split(2)
val numDistances = split(3)
val distances = split.drop(4)

val stars = (0 until numStars).map{i => distances(i % numDistances)}.toList
println(stars)


val result = (0 until numStars).map{
  starToPlaceBooster =>
    stars.zipWithIndex.map{
      case (d, index) =>
        if (index == starToPlaceBooster) (index, d, true) else (index, d, false)
    }
}


result.foreach(println)

def getTime(testSet:List[(Int, Int, Boolean)]):Float = {
  testSet.foldLeft(0.0f)((accum, x) => {
    val distance = x._2
    val boost = x._3
    val result = if (constructionTime > distance * 2 + accum || !boost) {
      distance / normalSpeed + accum
    } else if (accum > constructionTime)
      distance / boostSpeed + accum
    else {
      val timeWithoutBoost = constructionTime - accum
      val distanceWithoutBoost = timeWithoutBoost * normalSpeed
      val distanceWithBoost = distance - distanceWithoutBoost
      val timeWithBoost = distanceWithBoost / boostSpeed
      timeWithoutBoost + timeWithBoost + accum
    }
    result
  })
}

정답도 구해지는 답안 첨부합니다~!