#include <bits/stdc++.h>
using namespace std;

int main() {
	int n; cin >> n;
	int x[n] = {};
	for(int i = 0; i < n; ++i) {
		for(int j = 0; j < n; ++j) {
			int xx; cin >> xx;
			x[i] |= (xx << j);
		}
	}
	int a[n]; for(int i = 0; i < n; ++i) cin >> a[i];
	int ans = 1e9;
	for(int mask = 0; mask < (1 << n); ++mask) {
		int tmp = 0;
		for(int i = 0; i < n; ++i) {
			if((mask >> i) & 1) tmp += a[i];
		}
		if(ans <= tmp) continue;
		int msk = mask;
		while(true) {
			bool update = false;
			for(int i = 0; i < n; ++i) {
				if((x[i] & msk) == x[i]) {
					if(not (msk >> i & 1)) {
						update = true;
						msk |= (1 << i);
					}
				}
			}
			if(not update) break;
		}
		if(msk == ((1 << n) - 1)) {
			ans = tmp;
		}
	}
	cout << ans << endl;
	return 0;
}