Submission #623626

#	Time	Username	Problem	Language	Result	Execution time	Memory
623626		John3_141592	Carnival Tickets (IOI20_tickets)	C++14	11 / 100	2 ms	724 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
#define ll long long
#define par pair<int,int>
#define f first
#define s second
#define ld long duble
#define ull unsigned long long
#define st short int

using namespace std;

ll find_maximum(int k,vector<vector<int>>x){
    int n=x.size(),m=x[0].size();
    priority_queue <pair<int,par>> cola;
    for(int i=0;i<n;i++) cola.push({x[i][m-1],{i,m-1}});
    int asd[n][m],qwe[n][m],arr[n],brr[n];
    memset(asd,-1,sizeof(asd)),memset(qwe,0,sizeof(qwe)),fill(arr,arr+n,k),fill(brr,brr+n,0);
    for(int i=0;i<n;i++){
        for(int j=0;j<k;j++) qwe[i][j]=-1;
        arr[i]=k;
    }
    ll solve=0;
    for(int j=0;j<k;j++){
        bool vis[n];
        fill(vis,vis+n,false);
        vector <pair<int,par>> vec;
        for(int i=0;i<n/2;i++){
            int a=cola.top().s.f,b=cola.top().s.s;
            qwe[a][b]=1,solve+=x[a][b],asd[a][b]=j,cola.pop(),vis[a]=true,arr[i]--,vec.push_back({x[a][b-1],{a,b-1}}),qwe[a][arr[i]]=0;
        }
        for(auto i:vec) cola.push(i);
        for(int i=0;i<n;i++){
            if(vis[i]) continue;
            solve-=x[i][brr[i]],asd[i][brr[i]]=j,brr[i]++;
        }
    }
    vector <vector <int>> answer;
    for(int i=0;i<n;i++){
        vector <int> aux;
        for(int j=0;j<m;j++) aux.push_back(asd[i][j]);
        answer.push_back(aux);
    }
	allocate_tickets(answer);
	return solve;
}

• 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