N = int(input())
X = [int(input().replace(" ", "")[::-1], 2) for _ in range(N)]
A = [int(i) for i in input().split()]

complete = 2 ** N - 1

ans = float("inf")
for state in range(2 ** N):

    cand = sum(a for i, a in enumerate(A) if state >> i & 1)

    for _ in range(N):
        for i, x in enumerate(X):
            if state & x == x:
                state |= 1 << i

    if state == complete:
        ans = min(ans, cand)

print(ans)