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

    if sum(W) < L:
        print(N)
 
    else:
        ans = 0

        for bw in sorted(W):
            L = L - bw
            if L >= 0:
                ans += 1

            else:
                break
        
        print(ans)

if __name__ == "__main__":
    main()