fun main() {
    val (n, k) = readLine()!!.split(" ").map { it.toInt() }
    val p = readLine()!!.split(" ").map { it.toInt() }.groupingBy { it }.eachCount().map { it.key to it.value }.toTypedArray()

    p.sortByDescending { it.first }
    var ans = 0
    p.takeWhile { if (ans + it.second <= k) {ans+=it.second; true} else false }
    println(ans)
}