import itertools
l = int(input())
n = int(input())
w = sorted(list(map(int,input().split())))
w_acc = [0] + list(itertools.accumulate(w))
for res in range(n,0,-1):
    for i in range(n-res+1):
        if w_acc[i+res]-w_acc[i]<=l:
            print(res)
            exit()
print(0)