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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define vc vector
#define st first
#define nd second
#define all(a) a.begin(), a.end()
#define sz(a) (ll)a.size()
#define pub push_back
#define pob pop_back
const ll INF = 1e18;

vc<ll> solb(vc<vc<ll>> &b) {
	if (b.empty())
		return {0};
	ll n = sz(b);
	ll m = sz(b[0]);
	for (auto &p : b)
		reverse(all(p));
	vc<ll> ret(n * m + 1);
	ll s = 0;

	priority_queue<pll> pq;
	for (ll i = 0; i < n; i++)
		pq.push({b[i].back(), i});
	for (ll i = 1; i <= n * m; i++) {
		s += pq.top().st;
		ret[i] = s;
		ll j = pq.top().nd;
		pq.pop();
		b[j].pob();
		if (not b[j].empty())
			pq.push({b[j].back(), j});
	}
	return ret;
}

vc<ll> solc(vc<vc<ll>> &c) {
	if (c.empty())
		return {0};
	ll n = sz(c);
	ll m = sz(c[0]);
	
	vc<ll> s(n, 0);
	for (ll i = 0; i < n; i++)
		for (ll j = 0; j < m; j++)
			s[i] += c[i][j];
	
	vc<ll> ord(n);
	iota(all(ord), 0);
	sort(all(ord), [&](ll i, ll j) {
		return s[i] > s[j];
	});
	
	vc<vc<ll>> tmp(n);
	for (ll i = 0; i < n; i++)
		tmp[i] = c[ord[i]];
	swap(tmp, c);

	s.assign(n, 0);
	for (ll i = 0; i < n; i++)
		for (ll j = 0; j < m; j++)
			s[i] += c[i][j];
	
	auto pre = c;
	auto suf = c;
	for (ll i = 0; i < n; i++) {
		for (ll j = 1; j < m; j++)
			pre[i][j] = pre[i][j - 1] + pre[i][j];
		for (ll j = m - 2; j >= 0; j--)
			suf[i][j] = suf[i][j + 1] + suf[i][j];
	}

	auto mn = suf;
	auto mx = pre;
	for (ll i = 1; i < n; i++)
		for (ll j = 0; j < m; j++)
			mn[i][j] = min(mn[i][j], mn[i - 1][j]);
	for (ll i = n - 2; i >= 0; i--)
		for (ll j = 0; j < m; j++)
			mx[i][j] = max(mx[i][j], mx[i + 1][j]);
	
	vc<ll> spre(n + 1);
	for (ll i = 1; i <= n; i++)
		spre[i] = spre[i - 1] + s[i - 1];
	
	vc<ll> ret(n * m + 1);
	for (ll i = 1; i <= n * m; i++) {
		ll k = i / m;
		if (i % m == 0)
			ret[i] = spre[k];
		else
			ret[i] = max(spre[k] + mx[k][i % m - 1], spre[k + 1] - mn[k][i % m]);
	}
	return ret;
}

void program() {
	ll n, m, k;
	cin >> n >> m >> k;
	vc<vc<ll>> a(n, vc<ll>(m));
	for (ll i = 0; i < n; i++)
		for (ll j = 0; j < m; j++)
			cin >> a[i][j];
	
	vc<vc<ll>> b, c;
	for (ll i = 0; i < n; i++)
		if (a[i][0] >= a[i].back())
			b.pub(a[i]);
		else
			c.pub(a[i]);
	
	vc<ll> sb = solb(b);
	vc<ll> sc = solc(c);
	/*
	for (ll x : sb)
		cout << x << " ";
	cout << "\n";
	for (ll x : sc)
		cout << x << " ";
	cout << "\n";
	*/
	ll ans = 0;
	for (ll i = 0; i < sz(sb); i++)
		if (0 <= k - i and k - i < sz(sc))
			ans = max(ans, sb[i] + sc[k - i]);
	cout << ans << "\n";
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	program();
	return 0;
}