제출 #886390

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
886390		NeroZein	카니발 티켓 (IOI20_tickets)	C++17	27 / 100	389 ms	51332 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std; 

long long find_maximum(int k, vector<vector<int>> x) {
  int n = x.size();
  int m = x[0].size();
  long long ret = 0; 
  priority_queue<pair<int, int>> pq;  
  for (int i = 0; i < n; ++i) {
    for (int j = m - 1; j >= m - k; --j) {
      ret += x[i][j]; 
    }
    pq.emplace(-x[i][0] - x[i][m - k], i);
  }
  int cnt = 0; 
  vector<int> t(n); 
  while (cnt < n * k / 2) {
    auto [val, ind] = pq.top();
    pq.pop();
    cnt++;
    ret += val;
    t[ind]++; 
    if (t[ind] < k) {
      pq.emplace(-x[ind][t[ind]] - x[ind][m - k + t[ind]], ind);       
    }
  }
  vector<int> c(n), c2(n); 
  for (int i = 0; i < n; ++i) {
    c2[i] = m - k + t[i];
  }
  vector<vector<int>> answer(n, vector<int> (m, -1));
  for (int round = 0; round < k; ++round) {
    vector<bool> sub(n); 
    for (int j = 0, taken = 0; j < n; ++j) {
      if (c[j] < t[j] && taken < n / 2) {
        answer[j][c[j]] = round; 
        c[j]++;
        taken++; 
      } else {
        answer[j][c2[j]] = round;
        c2[j]++; 
      }
    }
  }
  allocate_tickets(answer);
  return ret;
}

• Subtask 1: 11 / 11
• Subtask 2: 16 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10