Hackerrank Utopian Tree in scala

Utopian Tree.scala

object Solution {
  def main(args: Array[String]) {
	  val lines = io.Source.stdin.getLines().filter(_.length > 0).drop(1)
	  val nums = lines.map(_.toInt)
	  nums.foreach( n => println( (0 to n).fold(0)( (acc, n) => if(n %2 == 0) acc +1 else acc *2   ))  )
  }
}