/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2020.06.18 19:34:15
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    int n;
    cin >> n;
    vector< vector< int > > x(n, vector< int >(n));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> x[i][j];
        }
    }
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    constexpr int INF = 1e9 + 6;
    vector< int > dp(1 << n, INF);
    dp[0] = 0;
    for (int i = 0; i < 1 << n; i++) {
        for (int j = 0; j < n; j++) {
            if (i & (1 << j)) {
                for (int k = 0; k < n; k++) {
                    if (x[j][k] == 1 && !(i & (1 << k))) {
                        dp[i] = min(dp[i],dp[i ^ (1 << j)] + a[j]);
                        break;
                    }
                    else if(k == n-1) {
                        dp[i] = min(dp[i],dp[i ^ (1 << j)]);
                    }
                }
            }
        }
    }
    cout << dp[(1 << n) - 1] << endl;
    return 0;
}