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