이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "tickets.h"
#include <bits/stdc++.h>
#define pb push_back
#define all(x) begin(x),end(x)
#define SZ(x) (int)(x).size()
#define mem(x,y) memset(&x,y,sizeof(x))
#define ll long long
using namespace std;
const int n0=1503;
vector<array<int,2>> pos[n0];
int l[n0],r[n0],used[n0];
ll find_maximum(int k, vector<vector<int>> x) {
int n=SZ(x),m=SZ(x[0]);
vector<vector<int>> answer(n,vector<int>(m,-1));
vector<array<int,3>> vec;
ll s=0;
for(int i=0; i<n; i++) {
for(int j=0; j<k; j++) {
s+=x[i][j+m-k];
vec.pb({-x[i][j]-x[i][j+m-k],-j,i});
}
}
sort(all(vec));reverse(all(vec));
set<array<int,2>> rows;
for(int i=0; i<k*n/2; i++) {
s+=vec[i][0];
l[vec[i][2]]++;
}
for(int i=0; i<n; i++) {
l[i]--;
rows.insert({l[i],i});
}
for(int i=k-1; i>=0; i--) {
assert(SZ(rows)>=n/2);
auto it=prev(end(rows));
vector<int> todel;
for(int j=0; j<n/2; j++) {
int x=(*it)[1],y=(*it)[0];
answer[x][y]=i;
pos[i].pb({x,y});
todel.pb(x);
it--;
}
for(int x:todel) {
rows.erase({l[x],x});
l[x]--;
if(l[x]>=0)
rows.insert({l[x],x});
}
}
for(int i=0; i<n; i++) r[i]=m-1;
for(int i=0; i<k; i++) {
mem(used,0);
for(auto &j:pos[i]) {
used[j[0]]=1;
}
for(int j=0; j<n; j++) {
if(!used[j]) {
answer[j][r[j]]=i;
r[j]--;
}
}
}
allocate_tickets(answer);
return s;
}
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