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  1. import scala.collection.immutable.TreeSet
  2.  
  3. object Main extends App {
  4.   implicit class Word(val repr: String)
  5.   implicit def unword(w: Word) = w.repr
  6.   implicit val wordOrdering = Ordering.fromLessThan[Word](_ != _)
  7.  
  8.   def solve(items: Set[Word], anagrams: String) = {
  9.     def branch(trial: String, position: Int, candidates: Set[Word]): Option[Seq[(String, String)]] = {
  10.       val label = anagrams.substring(position, position + trial.length)
  11.       if (trial.sorted == label.sorted) {
  12.         if (candidates.isEmpty) Option(Seq((trial, label)))
  13.         else candidates.view
  14.           .map(newTrial => branch(newTrial, position + trial.length, candidates - newTrial))
  15.           .find(_.isDefined).flatten.map((trial, label) +: _)
  16.       } else None
  17.     }
  18.     items.view.map(item => branch(item, 0, items - item)).find(_.isDefined).flatten
  19.   }
  20.  
  21.   val items = TreeSet(readLine().split(" ").map(new Word(_)) : _*)
  22.   val anagrams = readLine()
  23.  
  24.   solve(items, anagrams) match {
  25.     case None => println("Ne fart")
  26.     case Some(solution) =>
  27.       val (items, labels) = solution.unzip
  28.       labels.foreach(s => print(s + " "))
  29.       println()
  30.       items.foreach(s => print(s + " "))
  31.   }
  32. }
Success #stdin #stdout 0.44s 382272KB
comments (?)
stdin
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abab ab ab ab ab ab ab ab ab ab ab ab
abababababababababababaabb
stdout
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ab ab ab ab ab ab ab ab ab ab ab aabb 
ab ab ab ab ab ab ab ab ab ab ab abab
https://ideone.com/7IKaKq
language:
Scala (scala 2.12.8)
created:
10 years ago
visibility:
public

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