#include<iostream>
#include<array>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<tuple>
#include<cassert>
using namespace std;
typedef long long ll;
typedef unsigned int ui;
const ll mod = 1000000007;
const ll INF = (ll)1000000007 * 1000000007;
typedef pair<int, int> P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define Per(i,sta,n) for(int i=n-1;i>=sta;i--)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef long double ld;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ll, ll> LP;
int dx[4]={1,-1,0,0};
int dy[4]={0,0,1,-1};
template<class T>bool chmax(T &a, const T &b) {if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a, const T &b) {if(b<a){a=b;return 1;}return 0;}

int n;
int c[11][11];
int Z[11];ll dp[30010][11];

int get(int x,int s){
    x/=Z[s];
    return x%3;
}

void solve(){
    cin >> n;
    Z[0]=1;
    rep(i,n){
        Z[i+1]=Z[i]*3;
        rep(j,n){
            cin >> c[i][j];
        }
    }
    rep(S,Z[n]){
        rep(i,n) dp[S][i]=INF;
    }
    rep(i,n){
        dp[Z[i]][i]=0;
    }
    Rep(S,1,Z[n]){
        rep(i,n){
            rep(j,n){
                if(i==j) continue;
                if(get(S,j)==0){
                    chmin(dp[S+Z[j]][j],dp[S][i]+c[i][j]);
                }
                else if(get(S,j)==1){
                    chmin(dp[S+Z[j]][j],dp[S][i]+c[i][j]);
                }
            }
        }
    }
    ll ans=INF;
    rep(i,n) chmin(ans,dp[Z[n]-1][i]);
    rep(i,n){
        rep(j,n){
            chmin(ans,dp[Z[n]-1-2*Z[i]][j]+c[j][i]);
        }
    }
    cout << ans << endl;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << fixed << setprecision(50);
    solve();
}