import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


N = I()
M = [I() for _ in range(N)]

inf = 10**18
dp = [None]*(1<<N)
dp[0] = (0,0)

for i in range(1,1<<N):
    a,b = 10**18,0
    for j in range(N):
        if (i>>j) & 1:
            m = M[j]
            a0,b0 = dp[i^(1<<j)]
            x = a0+max(0,m-b0)
            if x < a:
                a = x
                b = (b0+m) % 1000
    dp[i] = (a,b)

print(dp[-1][0])