import sequtils,strutils,algorithm

let
  L = stdin.readline.parseInt
  N = stdin.readline.parseInt
var
  ws = stdin.readline.split(" ").map(parseInt)


ws.sort(system.cmp[int])

var (cnt, width)= (0, 0)
for w in ws:
  width += w
  if width <= L:
    cnt += 1
  else:
    break

echo cnt