from collections import defaultdict,deque
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
def inpl(): return list(map(int, input().split()))
def inpls(): return list(input().split())

L = int(input())
N = int(input())
ww = sorted(inpl())
ww.append(INF)
tmp = 0
for i,w in enumerate(ww):
    tmp += w
    if tmp > L:
        print(i)
        break