#include "tickets.h"
#include <bits/stdc++.h>
#define iter(a) a.begin(), a.end()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(iter(a), greater<>())
#define eb emplace_back
#define ef emplace_front
#define pob pop_back()
#define pof pop_front()
#define mp make_pair
#define F first
#define S second
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define printv(a, b) { \
for(auto pv : a) b << pv << " "; \
b << "\n"; \
}
using namespace std;
typedef long long ll;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template<typename A, typename B>
ostream& operator<<(ostream& o, pair<A, B> p){
return o << '(' << p.F << ',' << p.S << ')';
}
long long find_maximum(int k, std::vector<std::vector<int>> x){
int n = x.size();
int m = x[0].size();
assert(k == m);
ll sum = 0;
vector<pii> tmp;
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
tmp.eb(mp(i, j));
}
}
sort(iter(tmp), [&](pii a, pii b){ return x[a.F][a.S] > x[b.F][b.S]; });
vector<vector<bool>> big(n, vector<bool>(m));
vector<int> cnt(n);
for(int i = 0; i < n * m / 2; i++){
int r, c;
tie(r, c) = tmp[i];
big[r][c] = true;
cnt[r]++;
}
vector<vector<int>> ans(n, vector<int>(m));
int now = 0;
for(int i = 0; i < n; i++){
int cb = 0, cs = 0;
for(int j = 0; j < m; j++){
if(big[i][j]){
ans[i][j] = (now + cb) % m;
cb++;
sum += x[i][j];
}
else{
ans[i][j] = (now + cnt[i] + cs) % m;
cs++;
sum -= x[i][j];
}
}
now += cnt[i];
now %= m;
}
allocate_tickets(ans);
return sum;
}
