import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
dij = [(0, 1), (1, 0), (1, 1), (1, -1)]
inf = 10**19
# md = 998244353
md = 10**9+7

n = II()
ss = []
for u in range(n):
    s = SI()
    s = s.replace(" ", "")
    ss.append(int(s[::-1], 2))
aa = LI()

def ok(bit, ss):
    for _ in range(n):
        nss = []
        for u, s in enumerate(ss):
            if bit & s == s: bit |= 1 << u
            else: nss.append(s)
        if not nss: return True
        ss = nss
    return False

ans = inf
for bit in range(1 << n):
    cost = sum(aa[u] for u in range(n) if bit >> u & 1)
    if cost >= ans: continue
    if ok(bit, ss[:]): ans = cost

print(ans)