L = int(input())
N = int(input())
W = list(map(int, input().split()))
ww = []
i = 0

while True:
	if W != []:
		w = min(W)
		W.remove(w)
		ww.append(w)
	else:
		i += 1
		break
	if sum(ww) <= L:
		continue
	else:
		break
		
if i != 1:
	print(len(ww)-1)
else:
	print(len(ww))