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 c = NList;
        var (n, m, k) = (c[0], c[1], c[2]);
        var map = NArr(n);
        var sum = 0;
        for (var i = 0; i < n; ++i) sum += map[i][0];
        if (sum > k)
        {
            WriteLine(-1);
            return;
        }
        var dp = new bool[k + 1];
        dp[0] = true;
        for (var i = 0; i < n; ++i)
        {
            var ndp = new bool[k + 1];
            for (var p = 0; p < k; ++p)
            {
                if (!dp[p]) continue;
                for (var j = 0; j < m; ++j)
                {
                    if (p + map[i][j] > k) break;
                    ndp[p + map[i][j]] = true;
                }
            }
            dp = ndp;
        }
        for (var i = k; i >= 0; --i)
        {
            if (dp[i])
            {
                WriteLine(k - i);
                return;
            }
        }
    }
}