fun main(args: Array<String>) {
    var bigBox = readLine()!!.toInt()
    var numOfSmallBox = readLine()!!.toInt()
    var smallBoxes = readLine()!!.split(" ").map { it.toInt() }
    val sorted = smallBoxes.sorted()
    var boxList = mutableListOf<Int>()
    var total = 0
    
    for (i in 0 until numOfSmallBox) {
        total += sorted[i]
        if (total > bigBox) {
            break
        } else {
            boxList.add(sorted[i])
        }
    }
    println(boxList.size)
}