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#include<bits/stdc++.h>

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FORD(i, a, b) for(int i = (a); i >= (b); --i)
#define VAR(v, i) __typeof(i) v=(i)
#define FORE(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)


#define VI vector<int>
#define PII pair<int,int>
#define st first
#define nd second
#define mp make_pair
#define pb push_back
#define lint long long int


#define debug(x) {cerr <<#x <<" = " <<x <<endl; }
#define debug2(x,y) {cerr <<#x <<" = " <<x << ", "<<#y<<" = "<< y <<endl; }
#define debug3(x,y,z) {cerr <<#x <<" = " <<x << ", "<<#y<<" = "<< y << ", " << #z << " = " << z <<endl; }
#define debugv(x) {{cerr <<#x <<" = "; FORE(itt, (x)) cerr <<*itt <<", "; cerr <<endl; }}
#define debugt(t,n) {{cerr <<#t <<" = "; FOR(it,0,(n)) cerr <<t[it] <<", "; cerr <<endl; }}


#define make( x) int (x); scanf("%d",&(x));
#define make2( x, y) int (x), (y); scanf("%d%d",&(x),&(y));
#define make3(x, y, z) int (x), (y), (z); scanf("%d%d%d",&(x),&(y),&(z));
#define make4(x, y, z, t) int (x), (y), (z), (t); scanf("%d%d%d%d",&(x),&(y),&(z),&(t));
#define IOS ios_base::sync_with_stdio(0)
#define HEAP priority_queue


#define read( x) scanf("%d",&(x));
#define read2( x, y) scanf("%d%d",&(x),&(y));
#define read3(x, y, z) scanf("%d%d%d",&(x),&(y),&(z));
#define read4(x, y, z, t) scanf("%d%d%d%d",&(x),&(y),&(z),&(t));


using namespace std;

vector<lint> v[300005];
vector<lint> dobre;
VI zle;
lint zle_wynik[300005];

lint wez_dobre(int ile) {
	ile = min(ile, (int) dobre.size());
	if (ile == 0) return 0;
	return dobre[ile-1];
}

lint wez_zle(int ile, int m) {
	ile = min(ile, m * ((int) zle.size()));
	if (ile == 0) return 0;
	return zle_wynik[ile-1];
}

HEAP<pair<lint, int> > heap[300005];
HEAP<lint> hop[300005];
int zabrane[300005];

pair<lint, int> get(int r) {
	pair<lint, int> ja = heap[r].top();
	if (zabrane[ja.nd] != 1) {
		return ja;
	}
	heap[r].pop();
	return get(r);
}

int main() {
	make3(n, m, k);
	FOR(i,0,n) {
		FOR(j,0,m) {
			lint a;
			scanf("%lld", &a);
			v[i].pb(a);
		}
		if (v[i].back() <= v[i][0]) {
			FOR(j,0,m) dobre.pb(v[i][j]);
		} else {
			zle.pb(i);
		}
	} 
	sort(dobre.begin(), dobre.end(), greater<lint>());
	FOR(j,1,dobre.size()) dobre[j]+=dobre[j-1];
	if (zle.size() == 0) {
		printf("%lld\n", dobre[k-1]);
		return 0;
	}
//	debugv(dobre);


	FOR(i,0,zle.size()) {
		int ja = zle[i];
		FOR(j,1,m) {
			v[ja][j] += v[ja][j-1];
		}
	}
	int S = zle.size();
//	debug(S);
	FOR(r,0,m) 
		FOR(j,0,zle.size()) 
			heap[r].push({v[zle[j]][r], zle[j]});

	lint sofar = 0;
	FOR(i,0,S) {
		FOR(r,0,m) {
			int place = i*m+r;
			pair<lint, int> ja = get(r);

			
			zle_wynik[place] = sofar + ja.st;
			// druga opcja 
			if (i > 0) {
				lint pos = sofar + get(m-1).st + hop[r].top();
				zle_wynik[place] = max(zle_wynik[place], pos);
			}
			//cout << "USTAWIAM " << place << " na " << zle_wynik[place] << endl; 
		}
		pair<lint, int> ja = get(m-1);
		sofar += ja.st;
		zabrane[ja.nd] = 1;
		FOR(r,0,m) hop[r].push(-ja.st+v[ja.nd][r]);
	}

	
	
	
	lint best = 0;
	FOR(j,0,k+1) {
		best = max(best, wez_dobre(j) + wez_zle(k-j, m)); 
	}
	printf("%lld\n", best);
}