#!/usr/bin/python
# -*- coding: utf-8 -*-

# import
from sys import stdin, setrecursionlimit
setrecursionlimit(10**8)

def int_map():
    return map(int,input().split())

def int_list():
    return list(map(int,input().split()))

def int_mtx(N):
    x = [list(map(int, stdin.readline().split())) for _ in range(N)]
    return x

def str_mtx(N):
    x = [list(stdin.readline()[:-1]) for _ in range(N)]
    return x

def print_space(l):
    return print(" ".join([str(x) for x in l]))



"""    main code    """

N = int(input())
M = []
for _ in range(N):
    Mi = int(input())
    M.append(Mi)

dp = [[float("INF"),0] for _ in range(2**N)]
dp[0][0] = 0

for s in range(2**N):
    for u in range(N):
        if s >> u & 1 == 0:
            dp[s+2**u][0] = min(dp[s+2**u][0],dp[s][0]+max(0,M[u]-dp[s][1]))
            dp[s+2**u][1] = (dp[s][1]+M[u])%1000

print(dp[2**N-1][0])