import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Queue;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		int[] arr0 = new int[n];
		for (int i = 0; i < n; i++) {
			String[] sa = br.readLine().split(" ");
			for (int j = 0; j < n; j++) {
				if (Integer.parseInt(sa[j]) == 1) {
					arr0[i] += 1 << j;
				}
			}
		}
		String[] sa = br.readLine().split(" ");
		int[] a = new int[n];
		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sa[i]);
		}
		br.close();

		int ans = Integer.MAX_VALUE;
		int end = 1 << n;
		int all = end - 1;
		for (int i = 0; i < end; i++) {
			int[] arr = new int[n];
			System.arraycopy(arr0, 0, arr, 0, n);

			int val = 0;
			int x = i;
			boolean[] rem = new boolean[n];
			Arrays.fill(rem, true);
			Queue<Integer> que = new ArrayDeque<>();
			for (int j = 0; j < n; j++) {
				if ((x & 1) == 1) {
					val += a[j];
					arr[j] = 0;
					rem[j] = false;
					que.add(j);
				}
				x /= 2;
			}
			for (int k = 0; k < n; k++) {
				if (rem[k] && arr[k] == 0) {
					rem[k] = false;
					que.add(k);
				}
			}
			while (!que.isEmpty()) {
				int j = que.poll();
				for (int k = 0; k < n; k++) {
					if (rem[k]) {
						arr[k] &= (all - (1 << j));
						if (arr[k] == 0) {
							rem[k] = false;
							que.add(k);
						}
					}
				}
			}
			boolean flg = true;
			for (int k = 0; k < n; k++) {
				if (rem[k]) {
					flg = false;
					break;
				}
			}
			if (flg) {
				ans = Math.min(ans, val);
			}
		}
		System.out.println(ans);
	}
}