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) memset(&x,y,sizeof(x))
#define ll long long
using namespace std;
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];
answer[i][j+m-k]=j;
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];
rows.insert({vec[i][1],vec[i][2]});
}
for(int i=0; i<k; i++) {
assert(SZ(rows)>=n/2);
auto it=prev(end(rows));
vector<array<int,2>> todel;
for(int j=0; j<n/2; j++) {
int x=(*it)[1],y=(*it)[0];
swap(answer[x][y],answer[x][y+m-k]);
todel.pb(*it);
it--;
}
for(auto &j:todel)
rows.erase(j);
}
allocate_tickets(answer);
return s;
}
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