FileFixIt.scala

  def solve(existsFolderCount: Int,
            makeFolder: Int, folderListData: List[String]):Int = {
    val result = folderListData.flatMap(folderData => {
      println(folderData.split("/").mkString(", "))
      val splitList:List[String] = folderData.split("/").toList
      val splitSetList = (1 to splitList.size).map(n => splitList.take(n).mkString("/")).toList
      splitSetList
    }).toSet diff folderListData.take(existsFolderCount).toSet
    result.size - 1
  }

  val folderListData1:List[String] = List("/home/gcj/finals","/home/gcj/quals")
  assert(solve(0,2,folderListData1) == 4)
  val folderListData2:List[String] = List("/chicken","/chicken/egg","/chicken")
  assert(solve(2,1,folderListData2) == 0)
  val folderListData:List[String] = List("/a", "/a/b", "/a/c", "/b/b")
  assert(solve(1,3,folderListData) == 4)