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#include <bits/stdc++.h>

using namespace std;
#define fors(u, n, s) for(int u = (s); u<(n); u++)
#define foru(u, n) fors(u, n, 0)
#define f first
#define s second
#define vec vector
#define pb push_back
#define sz(x) ((int)x.size())
typedef long long ll;

// #define debug(x) cout << __LINE__ << " | " << x << endl
// #define debug_vec(x) {cout << __LINE__ << " | "; for(auto __i : x) cout << __i << ", "; cout << endl;}

#define debug(x) {}
#define debug_vec(x) {}

vec<ll> calc_desc(vec<vec<ll>> &v, int l){
	if(v.empty()) return vec<ll>(l+1, 0);

	int n = sz(v);
	int m = sz(v[0]);

	set<pair<ll, int>> st;

	foru(i, n) st.insert({-v[i][0], (int)i});
	vec<int> idxs(n, 0);

	vec<ll> out(l+1, 0);

	fors(i, l+1, 1){
		if(st.empty()) break;

		auto pt = st.begin();
		pair<ll, int> p = *pt;
		st.erase(pt);

		ll val = -p.f;
		int table = p.s;

		out[i] = out[i-1] + val;
		idxs[table] ++;
		if(idxs[table] != m) st.insert({-v[table][idxs[table]], table});
	}

	return out;
}

vec<ll> calc_asc(vec<vec<ll>> &v, int l){
	if(v.empty()) return vec<ll>(l+1, 0);

	int n = sz(v);
	int m = sz(v[0]);

	debug(n << " " << m);

	vec<vec<ll>> sums(n, vec<ll>(m+1, 0));
	foru(i, n){
		foru(j, m){
			sums[i][j+1] = sums[i][j] + v[i][j];
		}
	}

	sort(sums.begin(), sums.end(), [&](vec<ll> a, vec<ll> b){ return a[m] > b[m]; });

	vec<ll> big_sums(n+1);
	foru(i, n) big_sums[i+1] = big_sums[i] + sums[i][m];

	vec<vec<ll>> suf(n+1, vec<ll>(m));
	foru(i, m) suf[n][i] = LLONG_MIN/3;
	for(int i = n-1; i>=0; i--) foru(j, m){
		suf[i][j] = max(suf[i+1][j], sums[i][j]);
	}

	vec<vec<ll>> prices(n+1, vec<ll>(m));
	foru(i, m) prices[0][i] = LLONG_MAX/3;
	for(int i = 1; i < n; i++) foru(j, m){
		prices[i][j] = min(prices[i-1][j], sums[i-1][m]-sums[i-1][j]);
	}

	vec<ll> out(l+1);

	fors(i, l+1, 1){
		int big = i/m;
		int r = i%m;

		if(big == n){
			out[i] = big_sums[n];
			break;
		}

		ll sum_big = big_sums[big];

		ll price = prices[big][r];
		// foru(j, big) price = min(price, sums[j][m] - sums[j][r]);

		ll best_later = suf[big][r];

		ll ans1 = sum_big - price + sums[big][m];
		ll ans2 = sum_big + best_later;
		out[i] = max(ans1, ans2);		
	}

	return out;
}

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

	vec<vec<ll>> asc, desc;

	foru(_i, n){
		vec<ll> v(m);
		foru(i, m) cin >> v[i];

		bool as = true;
		foru(i, m-1) if(v[i] > v[i+1]) as = false;

		if(as) asc.pb(v);
		else desc.pb(v);
	}

	int l = n*m;

	vec<ll> a = calc_asc(asc, l);
	vec<ll> b = calc_desc(desc, l);

	ll ans = 0;

	foru(i, k+1) ans = max(ans, a[i]+b[k-i]);

	cout << ans << endl;
}

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

	srand(time(NULL));

	solve();

	return 0;
}