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#include <algorithm>
#include <cassert>
#include <execution>
#include <functional>
#include <iostream>
#include <numeric>
#include <queue>
#include <set>
#include <vector>

using namespace std;
using ll = long long;
#define all(a) begin(a), end(a)

vector<ll> greedy(vector<vector<ll>> const &a, ll k) {
    int n = a.size();
    vector<ll> res(k + 1);
    if (!n) {
        return res;
    }
    int m = a[0].size();

    priority_queue<pair<ll, int>> pq;
    vector<int> ptr(n);
    for (int i = 0; i < n; i++) {
        pq.push({a[i][ptr[i]++], i});
    }

    ll t = 0;
    for (int iter = 1; iter <= k; iter++) {
        if (!pq.empty()) {
            auto [v, p] = pq.top();
            pq.pop();
            t += v;

            int f = ptr[p]++;
            if (f < m) {
                pq.push({a[p][f], p});
            }
        }
        res[iter] = t;
    }
    return res;
}

void solve() {
    ll n, m, k;
    cin >> n >> m >> k;

    vector<vector<ll>> a(n, vector<ll>(m));
    for (auto &i : a) {
        for (auto &j : i) {
            cin >> j;
        }
    }

    vector<vector<ll>> gr;
    vector<vector<ll>> def;
    for (auto const &i : a) {
        if (is_sorted(all(i))) {
            def.push_back(i);
        } else {
            gr.push_back(i);
        }
    }

    sort(all(def), [](auto const &x, auto const &y) { return accumulate(all(x), 0ll) > accumulate(all(y), 0ll); });
    int d = def.size();
    vector<ll> sums(d), pref(d);
    for (int i = 0; i < d; i++) {
        sums[i] = accumulate(all(def[i]), 0ll);
    }
    partial_sum(all(sums), begin(pref));

    auto g = greedy(gr, k);
    // for (auto i : g) {
    //     cerr << i << " ";
    // }
    // cerr << "\n";
    auto gv = [&](function<ll(int)> const &f, int i) {
        // assert(0 <= i && i <= k);
        return f(i) + g[k - i];
    };

    ll res = g[k];
    for (int i = 0; i < d; i++) {
        // for (auto v : def[i]) {
        //     cerr << v << " ";
        // }
        // cerr << "\n";

        if ((i + 1) * m <= k) {
            ll val = pref[i] + g[k - (i + 1) * m];
            // cerr << i << " -> " << pref[i] << " " << val << "\n";
            res = max(res, val);
        }

        ll pp = 0;
        for (int j = 1; j < m; j++) {
            pp += def[i][j - 1];

            auto f = [&](int cnt) {
                cnt -= j;
                // assert(cnt % m == 0 && cnt >= 0);
                int t = cnt / m;
                // assert(t < n);
                if (t == 0) {
                    return pp;
                }

                --t;
                if (t < i) {
                    // assert(t < pref.size());
                    return pref[t] + pp;
                }

                // assert(t + 1 < pref.size());
                return pref[t + 1] - sums[i] + pp;
            };

            if (j > k) {
                continue;
            }

            int l = 0, r = min<int>(d - 1, (k - j) / m); // [l, r)
            // cerr << "i=" << i << " j=" << j << " R=" << r << "\n";
            while (r - l > 2) {
                int d = (r - l) / 3;
                int m1 = l + d, m2 = r - d;
                ll fv = gv(f, m * m1 + j), sv = gv(f, m * m2 + j);
                // res = max({res, fv, sv});

                if (fv < sv) {
                    l = m1;
                } else {
                    r = m2;
                }
            }

            for (int q = l; q <= r; q++) {
                res = max(res, gv(f, m * q + j));
            }
        }
    }
    cout << res << "\n";
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int q = 1;
    // cin >> q;
    while (q--) {
        solve();
    }
}