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

//template
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(a);i>(b);i--)
#define ALL(v) (v).begin(),(v).end()
typedef long long int ll; const int inf = 0x3fffffff; const ll INF = 0x3fffffffffffffff;
template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; }
template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; }
//template end



int main(){
    int n; scanf("%d",&n);
    vector<int> a(n);
    rep(i,0,n){
        int add=0;
        rep(j,0,n){
            int tmp; scanf("%d",&tmp);
            if(tmp)add+=1<<j;
        }
        a[i]=add;
    }
    vector<int> b(n);
    rep(i,0,n)scanf("%d",&b[i]);
    int ans=inf;
    rep(i,0,1<<n){
        int sum=0;
        rep(j,0,n)if(i>>j&1)sum+=b[j];
        int l=i,c=0,idx=-1;
        while(++idx<n){
            if(c>>idx&1)continue;
            if((l&a[idx])==a[idx]){
                c|=1<<idx; l|=1<<idx; idx=-1;
            }
        }
        if(c==(1<<n)-1)chmin(ans,sum);
    }
    printf("%d\n",ans);
    return 0;
}