using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var map = NArr(n);

        var INF = int.MaxValue;
        var mul = new int[n + 1];
        mul[0] = 1;
        for (var i = 1; i <= n; ++i) mul[i] = mul[i - 1] * 3;
        var bitmax = mul[n];
        var dp = new int[bitmax][];
        for (var i = 0; i < dp.Length; ++i) dp[i] = Enumerable.Repeat(INF, n).ToArray();
        for (var i = 0; i < n; ++i) dp[mul[i]][i] = 0;
        var ans = INF;
        for (var b = 0; b < bitmax; ++b)
        {
            for (var i = 0; i < n; ++i)
            {
                if (dp[b][i] == INF) continue;
                var flg = false;
                for (var j = 0; j < n; ++j)
                {
                    if (i == j) continue;
                    var dj = b / mul[j] % 3;
                    if (dj == 2) continue;
                    dp[b + mul[j]][j] = Math.Min(dp[b + mul[j]][j], dp[b][i] + map[i][j]);
                    flg = true;
                }
                if (!flg) ans = Math.Min(ans, dp[b][i]);
            }
        }
        WriteLine(ans);
    }
}