#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
/*
at every round we choose n / 2 mins and n / 2 maxs
value of round is sum_of_maxs - sum_of_mins
mx[i] + mn[i] > mx[j] + mn[j]
^ wrong
just image taking k mins and then find diffs next max - last min
sort everything and take greedy
works?
*/
long long find_maximum(int k, vector<vector<int>> x) {
int n = x.size(), m = x[0].size();
vector<vector<int>> ans(n, vector<int>(m, -1));
long long sum = 0;
vector<tuple<long long, int, int, int>> ops;
for (int i = 0; i < n; i++) {
for (int j = 0; j < k; j++) {
sum -= x[i][j];
ans[i][j] = (i + j) % k;
}
for (int j = k - 1; j >= 0; j--) {
ops.emplace_back(x[i][j] + x[i][m - (k - j)], i, j, m - (k - j));
}
}
int take = (n / 2) * k;
sort(ops.rbegin(), ops.rend());
for (int id = 0; id < take; id++) {
sum += get<0>(ops[id]);
int i = get<1>(ops[id]);
int jx = get<2>(ops[id]);
int jy = get<3>(ops[id]);
swap(ans[i][jx], ans[i][jy]);
}
/*vector<tuple<int, int, int>> vec;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (ans[i][j] != -1) {
vec.emplace_back(x[i][j], i, j);
}
}
}
sort(vec.begin(), vec.end());
int nxt = 0;
for (int id = 0; id < vec.size(); id++) {
int i = get<1>(vec[id]);
int j = get<2>(vec[id]);
who[i].push_back();
ans[i][j] = nxt;
if ((id + 1) % (
}*/
sum = 0;
vector<int> vec;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (ans[i][j] != -1) {
vec.push_back(x[i][j]);
}
}
}
sort(vec.begin(), vec.end());
int sz = vec.size();
for (int i = 0; i < sz; i++) {
if (i < sz / 2) {
sum -= vec[i];
} else {
sum += vec[i];
}
}
/*vector<vector<int>> vals(k);
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (ans[i][j] == -1) {
continue;
}
vals[ans[i][j]].push_back(x[i][j]);
}
}
for (int i = 0; i < k; i++) {
sort(vals[i].begin(), vals[i].end());
for (int j = 0; j < n; j++) {
if (j < n / 2) {
sum -= vals[i][j];
} else {
sum += vals[i][j];
}
}
}*/
allocate_tickets(ans);
return sum;
}
