import sys

def check_range(a,b,x):
	if a > x or b < x:
		sys.exit()

def check_eq(a,b):
	if a != b:
		sys.exit()

def cal_realx(data,list,L):

	realx = list[:]
	
	ans = 0
	length = len(realx)

	for i in range(0,length):
		ans += data[i] * realx[i]

	if len(list) == len(data):
		if ans <= L:
			return realx
		else:
			return []

	
	if ans + data[length] <= L:
		realx.append(1)
		realx = cal_realx(data,realx,L)

	elif ans < L:
		realx.append((L - ans) / data[length])
		realx = cal_realx(data,realx,L)

	else:
		realx.append(0)
		realx = cal_realx(data,realx,L)

	return realx

def check_digit(realx,N):
	
	if len(realx) == 0:
		return True

	for i in range(0,N):
		if realx[i] != int(realx[i]):
			return False
	return True


def cal(data,list,L):

	buf = list[:]
	ans = cal_realx(data,buf,L)

	if check_digit(ans,len(data)) == True:
		
		return ans

	elif len(buf) < len(data):
		buf.append(0)
		ans1 = cal(data,buf,L)
		
		buf.pop()
		buf.append(1)
		ans2 = cal(data,buf,L)

		if ans1.count(1) > ans2.count(1):
			return ans1
		else:
			return ans2
		

L = int(input())
check_range(1,10000,L)

N = int(input())
check_range(1,10000,N)

data = input().split(' ')
check_eq(len(data),N)

for i in range(0,N):
	data[i] = int(data[i])
	check_range(1,L,N)

max = 0
cnt = 0

list = []

print(cal(data,list,L).count(1))