N = int(input())
X = [tuple(map(int,input().split())) for i in range(N)]
A = list(map(int,input().split()))

oks = set()
visited = set()
def isok(b,i):
    if i in oks: return True
    if i in visited: return False
    visited.add(i)
    for j,x in enumerate(X[i]):
        if x==0 or b&(1<<j): continue
        if isok(b,j): continue
        return False
    oks.add(i)
    return True

ans = sum(A)
for b in range(1<<N):
    tmp = 0
    for i in range(N):
        if b&(1<<i): tmp += A[i]
    if tmp >= ans: continue
    oks = set()
    for i,row in enumerate(X):
        for j in range(N):
            if row[j] and b&(1<<j)==0:break
        else:
            oks.add(i)
    visited = set()
    for i in range(N):
        if i in oks: continue
        if isok(b,i): continue
        break
    else:
        ans = tmp
        
print(ans)