fun main(args:Array<String>?): Unit {
    val (_, d) = readLine()!!.trim().split(' ').map(String::toInt)
    val prize = readLine()!!.trim().split(' ').map(String::toInt)
    println(prize.filter{it > d}.let{ if (it.isEmpty()) "kusoge" else (it.sum() - d * it.size).toString() })
}
