Submission #834064

#	Time	Username	Problem	Language	Result	Execution time	Memory
834064		andrey27_sm	Carnival Tickets (IOI20_tickets)	C++17	0 / 100	3086 ms	7868 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
bool is_max[1000][1000];
set<int> a[1000];
long long find_maximum(int k, vector<vector<int>> d) {
    int n = d.size();
    int m = d[0].size();
    vector<vector<int>> ans(d.size(),vector<int>(d[0].size(),-1));
    ll sum = 0;
    vector<pair<int,pair<int,int>>> vals;
    vector<int> cnt(n,0);
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            vals.push_back({d[i][j],{i,j}});
            a[i].insert(j);
        }
    }
    sort(vals.begin(),vals.end());
    reverse(vals.begin(),vals.end());
    int last_max = 0;
    for (int i = 0; i < n*k/2; ++i)
    {
        if(cnt[vals[i].second.first] == k) continue;
        cnt[vals[i].second.first]++;
        is_max[vals[i].second.first][vals[i].second.second] = 1;
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            if(is_max[i][j]){
                sum+=d[i][j];
                a[i].erase(last_max);
                ans[i][j] = last_max++;
                last_max%=k;
            }
        }
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j+cnt[i] < k; ++j)
        {
            sum-=d[i][j];
            ans[i][j] = *a[i].begin();
            a[i].erase(a[i].begin());
        }
    }
    allocate_tickets(ans);
    return sum;
}

• Subtask 1: 0 / 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