import java.io.BufferedReader;
import java.io.InputStreamReader;

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;
			for (int j = 0; j < n; j++) {
				if ((x & 1) == 1) {
					val += a[j];
					arr[j] = 0;
					for (int k = 0; k < arr.length; k++) {
						arr[k] &= (all - (1 << j));
					}
				}
				x /= 2;
			}
			boolean flg = true;
			for (int v : arr) {
				if (v != 0) {
					flg = false;
					break;
				}
			}
			if (flg) {
				ans = Math.min(ans, val);
			}
		}
		System.out.println(ans);
	}
}