N = int(input())
M = [int(input()) for _ in range(N)]
inf = 10 ** 6
# dp[msk]: 集合mskを買ったときの最小金額
dp = [inf] * (1 << N)
dp[0] = 0
for msk in range(1 << N):
    for i in range(N):
        if msk & 1 << i:
            continue
        lp = 0
        for j in range(N):
            if msk & 1 << j:
                lp += M[j]
        dp[msk | 1 << i] = min(dp[msk | 1 << i],
                               dp[msk] + max(M[i] - lp % 1000, 0))
print(dp[-1])