import algorithm, sequtils, strutils
var
  l: int = stdin.readline.parseInt
  n: int = stdin.readline.parseInt
  w: seq[int] = stdin.readline.split.map(parseInt)
  sum: int = 0
  ans: int = 0
sort(w)
for i in w:
  sum += i
  if l >= sum:
    inc(ans)
  else:
    break
echo ans