Submission #317273

#	Time	Username	Problem	Language	Result	Execution time	Memory
317273		kshitij_sodani	Carnival Tickets (IOI20_tickets)	C++14	100 / 100	925 ms	60492 KiB

tickets

#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second

#include "tickets.h"
#include <vector>
int cur[1501];
int vis[1501];
long long find_maximum(int k,vector<vector<int>> xx) {
	int n = xx.size();
	int m = xx[0].size();
	vector<vector<int>> answer;
	llo su=0;
	priority_queue<pair<int,pair<int,int>>> ss;
	for(int i=0;i<n;i++){
		for(int j=m-1;j>=m-k;j--){
			su+=xx[i][j];
		}
		ss.push({-xx[i][m-k]-xx[i][0],{i,0}});
	}
	//cout<<su<<endl;
	for(int j=0;j<(n*k)/2;j++){
		pair<int,pair<int,int>> yy=ss.top();
	//	cout<<yy.a<<","<<yy.b.a<<","<<yy.b.b<<endl;
		ss.pop();
		su+=yy.a;
		cur[yy.b.a]+=1;
		if(yy.b.b<k-1){
			ss.push({-xx[yy.b.a][m-(k-yy.b.b)+1]-xx[yy.b.a][yy.b.b+1],{yy.b.a,yy.b.b+1}});
		}
	}
	vector<vector<int>> ans;
	for (int i = 0; i < n; i++) {
		std::vector<int> row(m);
		for (int j = 0; j < m; j++) {
			row[j] = -1;
		}
		ans.push_back(row);
	}
	llo cur2=0;
	for(int i=0;i<n;i++){
		for(int j=0;j<cur[i];j++){
			ans[i][j]=cur2;
			cur2=(cur2+1)%k;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<k;j++){
			vis[j]=0;
		}
		for(int j=0;j<m;j++){
			if(ans[i][j]>-1){
				vis[ans[i][j]]=1;
			}
		}
		vector<int> tt;
		for(int j=0;j<k;j++){
			if(vis[j]==0){
				tt.pb(j);
			}
		}
		for(int j=m-1;j>=m-(k-cur[i]);j--){
			ans[i][j]=tt[(m-1)-j];
		}
	}










	
	allocate_tickets(ans);
	return su;
}

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