import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")
writef = lambda x: print("{:.12f}".format(x))


t = int(input())
n = int(input())
a = [int(input()) for _ in range(n)]
inf = 10**12
dp = [[inf]*(1<<n) for _ in range(n+1)]
def chmin(dp,i,b,val):
    dp[i][b] = min(dp[i][b], val)
dp[0][0] = 0
for i in range(n):
    for b in range(1<<n):
        val = dp[i][b]
        for j in range(n):
            if b>>j&1:
                continue
            chmin(dp,i,b|(1<<j),val+a[j])
        if val<=t:
            chmin(dp,i+1,b,0)
ans = inf
for i in range(n+1):
    if dp[i][(1<<n)-1]==0:
        ans = i
        break
print(ans)