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#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define pll pair<ll,ll>
#define pii pair<int,int>
#define ld long double
using namespace std;
const int N = 3e5+2;
int n,m,k;
ll mal_res[N],DP[N];
vector<vector<ll>>stosy_rosn;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m >> k;
    vector<ll>prefmal;
    for(int i = 1;i <= n;i++){
        vector<ll>v(m);
        for(int j = 0;j < m;j++)cin >> v[j];
        if(v.front() >= v.back())
            for(auto x: v)
                prefmal.pb(x);
        else{
            for(int j = 1;j < m;j++)v[j] += v[j-1];
            stosy_rosn.pb(v);
        }
    }
    sort(prefmal.rbegin(),prefmal.rend());
    for(int i = 1;i <= prefmal.size();i++)mal_res[i] = mal_res[i-1] + prefmal[i-1];
    for(auto v: stosy_rosn)
        for(int i = m*stosy_rosn.size();i >= 1;i--)
            for(int j = 0;i + j <= m * stosy_rosn.size() && j < m;j++)
                DP[i+j] = max(DP[i+j],DP[i-1] + v[j]);
    ll res = 0;
    for(int i = 0;i <= k;i++)res = max(res,mal_res[i] + DP[k-i]);
    cout << res << "\n";
}