//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define rep(i, n) for(int i=0; i<n; ++i)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using namespace std;
using ll = int64_t;
using ld = long double;
using P = pair<int, int>;
using vs = vector<string>;
using vi = vector<int>;
using vvi = vector<vi>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQG = priority_queue<T, vector<T>, greater<T> >;
const int INF = 0xccccccc;
const ll LINF = 0xcccccccccccccccLL;
template<typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true);}
template<typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true);}
template<typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) { return is >> p.first >> p.second;}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p) { return os << p.first << ' ' << p.second;}

#undef _GLIBCXX_DEBUG
string to_string(const string &s) {return '"' + s + '"';}
string to_string(const char *s) {return to_string(string(s));}
string to_string(bool b) {return b?"true":"false";}
string to_string(vector<bool> v) {
	string res = "{";
	for(int i = 0; i < int(v.size()); i++) {
		if(i) res += ", ";
		res += to_string(v[i]);
	}
	res += "}";
	return res;
}
template<size_t N>
string to_string(bitset<N> v) {
	string res;
	for(size_t i = 0; i < N; i++) res += char('0' + v[i]);
	return res;
}
template<class A, class B>
string to_string(pair<A, B>);
template<class A, class B, class C>
string to_string(tuple<A, B, C>);
template<class A, class B, class C, class D>
string to_string(tuple<A, B, C, D>);
template<class A>
string to_string(A v) {
	bool first = true;
	string res = "{";
	for(const auto &x:v) {
		if(!first) res += ", ";
		first = false;
		res += to_string(x);
	}
	res += "}";
	return res;
}
template<class A, class B>
string to_string(pair<A, B> p) {
	return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template<class A, class B, class C>
string to_string(tuple<A, B, C> t) {
	return "(" + to_string(get<0>(t)) + ", " + to_string(get<1>(t)) + ", " + to_string(get<2>(t)) + ")";
}
template<class A, class B, class C, class D>
string to_string(tuple<A, B, C, D> t) {
	return "(" + to_string(get<0>(t)) + ", " + to_string(get<1>(t)) + ", " + to_string(get<2>(t)) + ", " + to_string(get<3>(t)) + ")";
}
void debug_out() {cerr << endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
	cerr << ' ' << to_string(H);
	debug_out(T...);
}
#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 822
#endif

//head

int num(vi &u) {
	int res = 0;
	for(auto x:u) {
		res *= 3;
		res += x;
	}
	return res;
}
vi _num(int num, int n) {
	vi res(n);
	for(int i = n-1; i >= 0; i--) {
		res[i] = num%3;
		num /= 3;
	}
	return res;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	int nn = 1;
	rep(i, n) nn *= 3;
	vvi c(n+1, vi(n));
	rep(i, n) rep(j, n) cin >> c[i][j];
	vector<vector<ll>> dp(nn, vector<ll>(n+1, LINF));
	auto dfs = [&](auto self, int id, int pre)->ll{
		ll &res = dp[id][pre];
		if(res != LINF) return res;
		auto vec = _num(id, n);
		bool flg = false;
		rep(i, n) if(i != pre and vec[i] != 2) flg = true;
		if(!flg) {
			return res = 0;
		}
		rep(i, n) {
			if(pre == i or vec[i] == 2) continue;
			vec[i]++;
			int u = num(vec);
			vec[i]--;
			chmin(res, self(self, u, i)+c[pre][i]);
		}
		return res;
	};
	cout << dfs(dfs, 0, n) << endl;
}