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

#define ll long long
#define pb push_back
#define F first
#define S second
#define pii pair<int,int>
#define vi vector<int>
#define vpii vector<pii>

#define loop(i,n) sloop(0,i,n)
#define sloop(s, i, n) for(int i=(s);i<(n);i++)
#define rloop(i,n) rsloop(0,i,n)
#define rsloop(s,i,n) for(int i=(n);i-->(s);)

#define all(v) (v).begin(),(v).end()

#define nie {cout<<"No\n";return;}
#define tak {cout<<"Yes\n";return;}

#ifdef DEBUG
#define DBG cout << __LINE__ << endl;
#else 
#define DBG
#endif 

//int xses[8] = {-1,1,0,0,-1,1,1,-1};
//int yses[8] = {0,0,-1,1,-1,1,-1,1};

#define int ll

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

	vi a={0};
	vector<vi> b;

	loop(i,n){
		vi tmp(m);
		loop(j,m)cin>>tmp[j];

		if(m==1||tmp[m-1]<=tmp[0]){
			for(int j:tmp){
				a.pb(j);
			}
		}else{
			b.pb(tmp);
		}
	}

	sort(a.rbegin(),prev(a.rend()));
	sloop(1,i,(int)a.size())a[i]+=a[i-1];
	while((int)a.size()<=k)a.pb(a.back());

	sort(all(b),[](vi&x,vi&y){
			return accumulate(all(x),0ll)>accumulate(all(y),0ll);
			});

	vector<vi>dp(b.size()+1,vi(m+1)),dp2(b.size()+1,vi(m+1,LLONG_MIN));

	for(int i=(int)b.size()-1;i>=0;i--){
		dp[i]=dp[i+1];
		int sum=0;

		loop(j,m){
			sum+=b[i][j];
			dp[i][j+1]=max(dp[i][j+1],sum);
		}
	}

	loop(i,(int)b.size()){
		if(i)dp2[i]=dp2[i-1];
		int V = accumulate(all(b[i]),0ll);
		int sum=0;

		loop(j,m){
			sum+=b[i][j];
			dp2[i][j+1]=max(dp2[i][j+1],sum-V);
		}
	}

	vi wz(b.size()+1);
	sloop(1,i,(int)b.size()+1){
		wz[i]=accumulate(all(b[i-1]),0ll);
	}
	sloop(1,i,(int)b.size()+1){
		wz[i]+=wz[i-1];
	}
	int p=0;
	int cur=0;

	int res=0;

	/*
	for(int i:a)cout<<i<<' ';
	cout<<'\n';

	for(auto i:b){
		for(int j:i){
			cout<<j<<' ';
		}
		cout<<'\n';
	}
		cout<<'\n';
	for(auto i:dp){
		for(int j:i){
			cout<<j<<' ';
		}
		cout<<'\n';
	}
		cout<<'\n';
	for(auto i:dp2){
		for(int j:i){
			cout<<j<<' ';
		}
		cout<<'\n';
	}
		cout<<'\n';
	for(int  i:wz)cout<<i<<'\n';
	cout<<'\n';
	*/

	loop(i,k+1){
		int z = wz[min(p,(int)wz.size()-1)]+dp[min(p,(int)dp.size()-1)][min(cur,m)]+a[k-i];
		if(p)z = max(z,wz[min(p+1,(int)wz.size()-1)]+dp2[min(p,(int)dp2.size()-1)][min(cur,m)]+a[k-i]);
		res = max(res,z);
		//cout<<z<<'\n';
		cur++;
		if(cur==m){
			p++;
			cur=0;
		}
	}

	//cout<<'\n';
	cout<<res<<'\n';




}

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

	int t=1;


	//cin>>t;
	loop(i,t)
	{
	#ifdef DEBUG

		if(t!=1)
		{
			cout<<"Test no. "<<i+1<<endl;
		}
	#endif
	
		solve();
	}

	#ifdef DEBUG
	cout << '\n';
	#endif
	return 0;
}