import scala.concurrent.duration._
 
object Main extends App {
  val input = Stream.continually(readLine()).takeWhile(null ne).map(_.toInt)
 
  def products(stream: Stream[Int]): Stream[Int] = stream match {
    case Stream.Empty ⇒ 
      Stream.Empty
 
    case x #:: xs ⇒
      xs.drop(5).map(_ * x) #::: products(xs)
  }
 
  val start = System.nanoTime()
  println(products(input).min)
  println(s"${(System.nanoTime() - start).nanos.toMillis} ms elapsed")
}

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MTEKMTIKNDUKNQoxMgoyNQoyMwoyMQoyMAoxMAo0CjI2

11
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45
5
12
25
23
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20
10
4
26