mod = 1000
N = input()
M = [input() for i in xrange(N)]
dp = {0:(0,0)}
for i in xrange(N):
	tmp_dp = dict()
	for k,(t,v) in dp.iteritems():
		for j in xrange(N):
			jbit = 1 << j
			if (jbit & k) != 0:
				continue
			nk = k|jbit
			nv = v + max(0,M[j] - (t%mod))
			if not(nk in tmp_dp and nv >= tmp_dp[nk][1]):
				tmp_dp[nk] = (t+M[j],nv)
	dp = tmp_dp
print dp[2**N-1][1]