#include "bits/stdc++.h"
using namespace std;
using ll     = long long;
using pii    = pair<int, int>;
using pll    = pair<ll, ll>;
using vi     = vector<int>;
using vl     = vector<ll>;
using vvi    = vector<vi>;
using vvl    = vector<vl>;
const ll INF = 1LL << 60;
const ll MOD = 1000000007;
template <class T>
bool chmax(T &a, const T &b) {
    return (a < b) ? (a = b, 1) : 0;
}
template <class T>
bool chmin(T &a, const T &b) {
    return (b < a) ? (a = b, 1) : 0;
}
template <class C>
void print(const C &c, std::ostream &os = std::cout) {
    std::copy(std::begin(c), std::end(c), std::ostream_iterator<typename C::value_type>(os, " "));
    os << std::endl;
}

int main() {
    int n, m, k;
    cin >> n >> m >> k;
    vvi a(n, vi(m));
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cin >> a[i][j];
        }
    }
    vvl dp(n + 1, vl(501, 0));
    dp[0][0] = 1;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            for (int k = 0; k <= 500; ++k) {
                if (k + a[i][j] <= 500)
                    dp[i + 1][k + a[i][j]] += dp[i][k];
            }
        }
    }
    int ret = -1;
    for (int i = k; i >= 1; --i) {
        if (dp[n][i] > 0) {
            ret = k - i;
            break;
        }
    }
    cout << ret << "\n";
    return 0;
}