#include <bits/stdc++.h>
#include <bits/extc++.h>
#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define ef(a) emplace_front(a)
#define pob pop_back()
#define pof pop_front()
#define mp(a, b) make_pair(a, b)
#define F first
#define S second
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define tomax(a, b) ((a) = max((a), (b)))
#define tomin(a, b) ((a) = min((a), (b)))
#define topos(a) ((a) = (((a) % MOD + MOD) % MOD))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
if(pvaspace) b << " "; pvaspace=true;\
b << pva;\
}\
b << "\n";}
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<ld, ld>;
using tiii = tuple<int, int, int>;
const ll MOD = 1000000007;
const ll MAX = 2147483647;
template<typename A, typename B>
ostream& operator<<(ostream& o, pair<A, B> p){
return o << '(' << p.F << ',' << p.S << ')';
}
ll ifloor(ll a, ll b){
if(b < 0) a *= -1, b *= -1;
if(a < 0) return (a - b + 1) / b;
else return a / b;
}
ll iceil(ll a, ll b){
if(b < 0) a *= -1, b *= -1;
if(a > 0) return (a + b - 1) / b;
else return a / b;
}
struct discr{
vector<int> t;
int sz;
discr(vector<int>& v): t(v){
gsort(t);
uni(t);
sz = t.size();
}
int operator()(int x){
return lower_bound(iter(t), x, greater<>()) - t.begin();
}
int operator[](int x){
return t[x];
}
};
int n, k, c;
vector<discr> d;
vector<int> ok;
vector<vector<int>> ex;
vector<vector<int>> a;
int cnt = 0;
vector<int> mx;
vector<bool> use;
void init(){
a.resize(n + 1, vector<int>(k));
mx.resize(k);
use.resize(n + 1);
ex.resize(k);
}
struct info{
vector<int> v;
int sum = 0;
info(vector<int> v): v(v){
for(int i = 0; i < k; i++) sum += d[i][v[i]];
}
bool operator<(const info& b) const{
return sum == b.sum ? v < b.v : sum > b.sum;
}
};
vector<int> arr;
set<vector<int>> owo;
void dfs(int now, vector<int>& v){
if(now == k){
vector<int> tv = arr;
lsort(tv);
//cerr << "try ";
//printv(arr, cerr);
//for(auto i : owo) printv(i, cerr);
if(owo.find(tv) != owo.end()) return;
owo.insert(tv);
//cerr << "ok ";
//printv(arr, cerr);
cnt++;
if(cnt == c){
int sum = 0;
for(int i = 0; i < k; i++) sum += mx[i];
cout << sum << "\n";
exit(0);
}
return;
}
if(mx[now] == d[now][v[now]]){
for(int i : ok){
if(use[i]) continue;
vector<int> omx = mx;
for(int t = 0; t < k; t++) mx[t] = max(mx[t], a[i][t]);
use[i] = true;
arr.eb(i);
dfs(now + 1, v);
arr.pob;
use[i] = false;
mx = omx;
}
}
else{
for(int i : ex[now]){
if(use[i]) continue;
vector<int> omx = mx;
for(int t = 0; t < k; t++) mx[t] = max(mx[t], a[i][t]);
use[i] = true;
arr.eb(i);
dfs(now + 1, v);
arr.pob;
use[i] = false;
mx = omx;
}
}
}
int main(){
StarBurstStream
cin >> n >> k >> c;
init();
vector<vector<int>> td(k);
for(int i = 1; i <= n; i++){
for(int j = 0; j < k; j++){
cin >> a[i][j];
td[j].eb(a[i][j]);
}
}
for(int i = 0; i < k; i++){
d.eb(td[i]);
}
/*cerr << "discr\n";
for(int i = 0; i < k; i++){
cerr << i << " ";
printv(d[i].t, cerr);
}*/
set<info> pq;
set<info> vst;
pq.insert(info(vector<int>(k)));
vst.insert(info(vector<int>(k)));
while(!pq.empty()){
info vi = *pq.begin();
pq.erase(pq.begin());
vector<int> v = vi.v;
for(int i = 0; i < k; i++) ex[i].clear();
ok.clear();
for(int i = 1; i <= n; i++){
for(int j = 0; j < k; j++){
if(a[i][j] > d[j][v[j]]) goto nxt;
}
ok.eb(i);
for(int j = 0; j < k; j++){
if(a[i][j] == d[j][v[j]]) ex[j].eb(i);
}
nxt:;
}
bool oao = false;
for(int i = 0; i < k; i++) if(ex[i].empty()) oao = true;
//if(ok.size() < k) continue;
//if(!oao){
//cerr << "solve ";
//printv(v, cerr);
//printv(ok, cerr);
fill(iter(mx), -1);
dfs(0, v);
// }
for(int i = 0; i < k; i++){
if(v[i] + 1 >= d[i].sz) continue;
v[i]++;
info t = v;
if(vst.find(t) != vst.end()) continue;
vst.insert(t);
pq.insert(t);
v[i]--;
}
}
assert(false);
return 0;
}
