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#include <bits/stdc++.h>
using namespace std;

using ll = int64_t;

constexpr ll mod = 1000000007;

vector<ll> increasing(ll k, vector<vector<ll>>& vs) {
  ll total = 0;
  for(auto& vect : vs) {
    total += vect.size();
  }
  
  k = min(k, total);

  vector<ll> ans;
  ans.push_back(0);
  if(total == 0) {
    return ans;
  }


  sort(vs.begin(), vs.end(), [&] (auto& v1, auto& v2) { return v1.back() > v2.back(); });

  ll w = vs[0].size();
  vector<set<ll>> full(w);
  vector<multiset<ll>> empty(w);
  ll nfull = 0;
  ll fullsum = 0;

  for(const auto& vect : vs) {
    for(int i = 0; i < w; i++) {
      empty[i].insert(vect[i]);
    }
  }  
  
  for(ll i = 0; i < k; i++) {
    ll ind = i % w;

    ll score = fullsum + *empty[ind].rbegin();
    if(nfull > 0) {
      score = max(score, fullsum + *full[ind].rbegin() + vs[nfull].back());
    }
    
    ans.push_back(score);

    if(ind == w - 1) {
      fullsum += vs[nfull].back();

      for(int j = 0; j < w; j++) {
        empty[j].erase(empty[j].find(vs[nfull][j]));
        full[j].insert(vs[nfull][j] - vs[nfull].back());
      }

      nfull++;
    }
  }

  return ans;
}

vector<ll> decreasing(int k, const vector<vector<ll>>& vs) {
  int total = 0;
  for(auto& vect : vs) {
    total += vect.size();
  }
  k = min(k, total);


  vector<ll> ans;
  ans.push_back(0);
  if(total == 0) {
    return ans;
  }

  set<pair<ll, int>> best;
  for(int i = 0; i < vs.size(); i++) {
    best.emplace(vs[i].front(), i);
  }

  vector<int> ps(vs.size());

  ll v = 0;
  for(int i = 0; i < k; i++) {
    auto [value, p] = *best.rbegin();
    v += value;
    ps[p]++;
    best.erase({value, p});
    if(ps[p] < vs[p].size()) {
      best.emplace(vs[p][ps[p]], p);
    }

    ans.push_back(v);
  }

  return ans;
}

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

  vector<vector<ll>> inc;
  vector<vector<ll>> dec;

  for(int i = 0; i < n; i++) {
    vector<ll> vs(m);
    for(auto& v : vs) {
      cin >> v;
    }

    if(vs.back() <= vs.front()) {
      dec.push_back(std::move(vs));
    }
    else {
      partial_sum(vs.begin(), vs.end(), vs.begin());
      inc.emplace_back(std::move(vs));
    }
  }

  auto a1 = increasing(k, inc);
  auto a2 = decreasing(k, dec);

  ll ans = 0;

  for(int i = 0; i < a1.size(); i++) {
    ans = max(ans, a1[i] + a2[min<int>(k - i, a2.size() - 1)]);
  }

  cout << ans;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  //freopen("in", "r", stdin);
  solve();
}