#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll inf = (1LL << 62);
template <typename T>
bool chmax(T& a, const T& b)
{
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
template <typename T>
bool chmin(T& a, const T& b)
{
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
ll dp[20][510];
int main()
{
    ll n, m, k;
    cin >> n >> m >> k;
    vector<vector<ll>> a(n, vector<ll>(m));
    for (ll i = 0; i < n; ++i) {
        for (ll j = 0; j < m; ++j) {
            cin >> a[i][j];
        }
    }
    dp[0][0] = 1;
    for (ll i = 0; i < n; ++i) {
        for (ll j = 0; j <= k; ++j) {
            //dp[i + 1][j] = dp[i][j];
            for (ll l = 0; l < m; ++l) {
                if (j >= a[i][l]) {
                    dp[i + 1][j] |= dp[i][j - a[i][l]];
                }
            }
        }
    }
    for (ll i = k; i >= 0; i--) {
        if (dp[n][i] != 0) {
            cout << k - i << endl;
            return 0;
        }
    }
    cout << -1 << endl;
}