fun reformat(
  str : String,
  normalizeCase : Boolean = true,
  uppercaseFirstLetter : Boolean = true,
  divideByCamelHumps : Boolean = true,
  wordSeparator : String = " "
) =
  (normalizeCase, uppercaseFirstLetter, divideByCamelHumps, wordSeparator)

trait A {
    fun bar2(arg: Int = 239) : Int

    fun bar(arg: Int = 240) : Int = bar2(arg/2)
}

open abstract class B() : A {
    fun foo(arg: Int = 239 + 1) : Int = arg

    abstract fun foo2(arg: Int = 239) : Int

    override fun bar2(arg: Int) : Int = arg
}

class C() : B() {
    override fun foo2(arg: Int) : Int = arg
}

// fun <T> T.toPrefixedString(prefix: String = "") = prefix + (this as java.lang.Object).toString()

fun box() : String {
    val expected = (true, true, true, " ")

//    if("mama".toPrefixedString("papa") != "papamama") return "fail"
//    if("mama".toPrefixedString() != "mama") return "fail"
    if(C().bar(10) != 5) return "fail"
    if(C().bar() != 120) return "fail"
    if(C().foo(10) != 10) return "fail"
    if(C().foo() != 240) return "fail"
    if(C().foo2() != 239) return "fail"
    if(C().foo2(10) != 10) return "fail"
    if(C().bar2() != 239) return "fail"
    if(C().bar2(10) != 10) return "fail"
    if(reformat("", true, true, true, " ") != expected) return "fail"
    if(reformat("", true, true, true) != expected) return "fail"
    if(reformat("", true, true) != expected) return "fail"
    if(reformat("", true) != expected) return "fail"
    if(reformat("") != expected) return "fail"
    return "OK"
}