import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

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());
		Map<Integer, Set<Integer>> map0 = new HashMap<>();
		for (int i = 0; i < n; i++) {
			String[] sa = br.readLine().split(" ");
			Set<Integer> set = new HashSet<>();
			map0.put(i, set);
			for (int j = 0; j < n; j++) {
				if (Integer.parseInt(sa[j]) == 1) {
					set.add(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;
		for (int i = 0; i < end; i++) {
			Map<Integer, Set<Integer>> map = new HashMap<>();
			for (int j = 0; j < n; j++) {
				Set<Integer> set = new HashSet<>();
				set.addAll(map0.get(j));
				map.put(j, set);
			}

			int val = 0;
			for (int j = 0; j < n; j++) {
				if ((i >> j & 1) == 1) {
					val += a[j];
					map.remove(j);
					for (Integer k : map.keySet()) {
						map.get(k).remove(j);
					}
				}
			}
			boolean flg = true;
			for (Set<Integer> set : map.values()) {
				if (!set.isEmpty()) {
					flg = false;
					break;
				}
			}
			if (flg) {
				ans = Math.min(ans, val);
			}
		}
		System.out.println(ans);
	}
}