def main():
    L = int(input())
    N = int(input())
    W = list(map(int, input().split()))
    total = 0
    ans = 0

    sorted_W = sorted(W)
    
    for num in sorted_W:
        if total + num > L:
            break
        total += num
        ans += 1
  
    print(ans)

if __name__ == "__main__":
    main()