import sys

sys.setrecursionlimit(10 ** 8)

input = sys.stdin.readline


def main():
    L = int(input())
    N = int(input())
    W = [int(x) for x in input().split()]

    W.sort()
    total = 0
    ans = 0
    for w in W:
        total += w
        if total > L:
            break
        ans += 1

    print(ans)

    

if __name__ == '__main__':
    main()