import sys
read=sys.stdin.buffer.read
readline=sys.stdin.buffer.readline
readlines=sys.stdin.buffer.readlines

n=int(readline())
m=list(map(int, read().split()))
s=[sum(x for j, x in enumerate(m) if i&(1<<j))%1000 for i in range(1<<n)]
INF=10**9
dp=[INF]*(1<<n)
dp[0]=0
for i in range(1<<n):
    for j in range(n):
        if i&(1<<j):
            continue
        x=dp[i]+max(0, m[j]-s[i])
        if dp[i^(1<<j)]>x:
            dp[i^(1<<j)]=x
print(dp[-1])