#include "tickets.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int maxn = 2005;
vector<int> cntm(maxn, 0);
bool cmp(const int &i, const int &j) { return cntm[i] < cntm[j]; }
long long find_maximum(int k, vector<vector<int>> x) {
int n = x.size();
int m = x[0].size();
ll ans = 0;
vector<int> mi(n, 0); // kolko minusov mame v tomto riadku
priority_queue<pair<ll, int> > p1; // vymenime nejake velke cislo za male cislo
for (int i = 0; i < n/2; i++) // zoberieme len maxima
{
for (int j = 0; j < k; j++)
{
p1.push({-x[i][j] - x[i][m - k + j], i});
ans += x[i][m - k + j];
}
}
priority_queue<pair<ll, int> > p2;
for (int i = n/2; i < n; i++) // zoberieme len minima
{
mi[i] = k;
for (int j = 0; j < k; j++)
{
p2.push({x[i][j] + x[i][m - k + j], i});
ans -= x[i][j];
}
}
while (p1.top().first + p2.top().first > 0) // vieme to urobit aj lepsie
{
ans += p1.top().first + p2.top().first;
mi[p1.top().second]++;
mi[p2.top().second]--;
p1.pop(), p2.pop();
}
vector<int> v(k);
vector<vector<int> > s(n, vector<int>(m, -1));
for (int i = 0; i < k; i++) v[i] = i;
for (int i = 0; i < n; i++)
{
int cnt = 0;
nth_element(v.begin(), v.begin() + mi[i], v.end(), cmp);
for (int j = 0; j < mi[i]; j++)
cntm[v[j]]++, s[i][j] = v[cnt++];
for (int j = m - (k - mi[i]); j < m; j++)
s[i][j] = v[cnt++];
}
allocate_tickets(s);
return ans;
}
