fun main(args: Array<String>){
    val boxWidth = readLine()!!.toInt()
    val blockCount = readLine()!!.toInt()
    val blockList = readLine()!!.split(" ").map { it.toInt() }.sorted()

    if(boxWidth >= blockList.sum()) {
        println(blockCount)
        return
    }

    var total = 0
    for(i in blockList.indices) {
        total += blockList[i]
        if(total > boxWidth) {
            println(i)
            break
        }
    }
}