fun main(){
    var l = readLine()!!.toInt()
    val n = readLine()!!.toInt()
    val w = readLine()!!.split(" ").map(String::toInt).sortedBy{it}
    var cnt = 0
    for (i in w){
        if(l - i < 0) break
        cnt++
        l -= i
    }
    println(cnt)
}