import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import numpy as np

L = int(readline())
N = int(readline())
W = np.array(read().split(), np.int64)

W.sort()

Wcum = np.cumsum(W)

answer = (Wcum <= L).sum()
print(answer)