#https://yukicoder.me/problems/528
def main():
    import sys
    input = sys.stdin.readline
    sys.setrecursionlimit(10**7)
    from collections import Counter, deque
    #from collections import defaultdict
    from itertools import combinations, permutations, accumulate
    #from itertools import product
    from bisect import bisect_left,bisect_right
    import heapq
    from math import floor, ceil
    #from operator import itemgetter

    inf = 10**17
    #mod = 10**9 + 7

    N = int(input())
    M = [int(input()) for _ in range(N)]

    dp = [inf]*(1<<N)
    dp[-1] = 0

    def dfs(s):
        if dp[s]!=inf:
            return dp[s]
        
        for i in range(N):
            if s&(1<<i):
                continue
            #品物iを買うことでかかる金額
            total = 0
            for j in range(N):
                if s&(1<<j):
                    total += M[j]
            cost = max(M[i] - total%1000, 0)
            dp[s] = min(dp[s], dfs(s|(1<<i)) + cost)
        return dp[s]

    print(dfs(0))

if __name__ == '__main__':
    main()