제출 #1124129

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1124129		epicci23	카니발 티켓 (IOI20_tickets)	C++17	60 / 100	606 ms	54332 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();
    vector<vector<int>> ans(n,vector<int>(m,-1));
    long long tot = 0;
    for(int i=0;i<n;i++) for(int j=0;j<k;j++) tot -= x[i][j];
      
    priority_queue<array<long long,2>> pq;
    vector<int> p(n,1);
    for(int i=0;i<n;i++) pq.push({x[i][k-p[i]]+x[i][m-p[i]],i});
    for(int i=0;i<k*n/2;i++){
      auto u = pq.top();
      pq.pop();
      tot += u[0];
      int ind = u[1];
      p[ind]++;
      pq.push({x[ind][k-p[ind]]+x[ind][m-p[ind]],ind});
    }
     
    vector<int> lf(n);
    for(int i=0;i<n;i++) lf[i]=p[i]-1;
    
    array<int,2> tag[n];
    for(int i=0;i<n;i++) tag[i]={0,0};

    for(int i=0;i<k;i++){
      vector<array<int,2>> v;
      for(int j=0;j<n;j++) v.push_back({lf[j],j});
      sort(v.begin(),v.end());
      reverse(v.begin(),v.end());
      for(int j=0;j<n;j++){
        int ind = v[j][1];
      	if(j<n/2){
          lf[ind]--;
          tag[ind][1]++;
          ans[ind][m-tag[ind][1]]=i;
      	}
      	else{
          ans[ind][tag[ind][0]]=i;
          tag[ind][0]++;
      	}
      }
    }

	allocate_tickets(ans);
	return tot;
}

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