package _0943;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;

public class Main {
    private int n;
    private int[][] x;
    private int[] a;

    public void solve(BufferedReader stdin, PrintWriter stdout) throws NumberFormatException, IOException {
        Pattern space = Pattern.compile(" ");
        n = Integer.parseInt(stdin.readLine());
        x = new int[n][n];
        for (int i = 0; i < n; i++) {
            x[i] = space.splitAsStream(stdin.readLine()).mapToInt(Integer::parseInt).toArray();
        }
        a = space.splitAsStream(stdin.readLine()).mapToInt(Integer::parseInt).toArray();

        int bit = 0;
        for (int i = 0; i < n; i++) {
            if (Arrays.stream(x[i]).allMatch(v -> v == 0)) {
                bit |= 1 << i;
            }
        }

        stdout.println(f(bit, 0));
    }

    private Map<Tuple, Integer> cache = new HashMap<>();

    private int f(int b1, int b2) {
        if (b1 == (1 << n) - 1) {
            return 0;
        }

        Tuple t = new Tuple();
        t.x = b1;
        t.y = b2;
        if (cache.containsKey(t)) {
            return cache.get(t);
        }

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < n; i++) {
            if ((b1 & (1 << i)) != 0) {
                continue;
            }

            int c1 = b1 | (1 << i);
            int c2 = b2;
            int d = 0;
            for (int j = 0; j < n; j++) {
                if (x[i][j] == 1
                        && (b1 & (1 << j)) == 0
                        && (b2 & (1 << j)) == 0) {
                    c2 |= 1 << j;
                    d += a[j];
                }
            }

            ans = Math.min(ans, f(c1, c2) + d);
        }

        cache.put(t, ans);
        return ans;
    }
    public static void main(String[] args) throws NumberFormatException, IOException {
        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter stdout = new PrintWriter(System.out, false);
        new Main().solve(stdin, stdout);
        stdout.flush();
    }

    private static class Tuple {
        private int x;
        private int y;
        @Override
        public int hashCode() {
            final int prime = 31;
            int result = 1;
            result = prime * result + x;
            result = prime * result + y;
            return result;
        }
        @Override
        public boolean equals(Object obj) {
            if (this == obj)
                return true;
            if (obj == null)
                return false;
            if (getClass() != obj.getClass())
                return false;
            Tuple other = (Tuple) obj;
            if (x != other.x)
                return false;
            if (y != other.y)
                return false;
            return true;
        }
    }
}