Submission #578755

#	Time	Username	Problem	Language	Result	Execution time	Memory
578755		2fat2code	Carnival Tickets (IOI20_tickets)	C++17	11 / 100	2 ms	724 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
#define fr first
#define sc second
#define all(s) s.begin(), s.end()

using namespace std;

const int nmax = 1505;

int n, m;
long long ans;
vector<int>indx[nmax][2];

long long find_maximum(int k, vector<vector<int>> x) {
	n = x.size();
	m = x[0].size();
	vector<pair<int,pair<int,int>>>arr;
	vector<vector<int>>kek(n, vector<int>(m));
	for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            arr.push_back({x[i][j], {i, j}});
        }
	}
	sort(all(arr));
	for(int i=0;i<(n*m/2);i++){
        ans -= (long long)arr[i].fr;
        indx[arr[i].sc.fr][0].push_back(arr[i].sc.sc);
	}
	for(int i=(n*m/2);i<n*m;i++){
        ans += (long long)arr[i].fr;
        indx[arr[i].sc.fr][1].push_back(arr[i].sc.sc);
	}
	for(int i=1;i<=m;i++){
        int lol = 0;
        for(int j=1;j<=n;j++){
            if(indx[j-1][0].size() < indx[j-1][1].size()){
                auto it = indx[j - 1][1].back();
                indx[j - 1][1].pop_back();
                kek[j-1][it] = i - 1;
            }
            else if(indx[j-1][0].size() > indx[j-1][1].size()){
                auto it = indx[j - 1][0].back();
                indx[j - 1][0].pop_back();
                kek[j - 1][it] = i - 1;
            }
            else{
                if(lol){
                   lol = 0;
                   auto it = indx[j - 1][1].back();
                    indx[j - 1][1].pop_back();
                    kek[j-1][it] = i - 1;
                }
                else{
                    lol = 1;
                    auto it = indx[j - 1][0].back();
                    indx[j - 1][0].pop_back();
                    kek[j - 1][it] = i - 1;
                }
            }
        }
	}
	allocate_tickets(kek);
	return ans;
}

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