Submission #1123212

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123212		Luvidi	Carnival Tickets (IOI20_tickets)	C++20	27 / 100	436 ms	51384 KiB

tickets

#include "tickets.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;

#define pii pair<int,int>
#define fs first
#define sc second

long long find_maximum(int k, std::vector<std::vector<int>> a) {
	int n = a.size();
	int m = a[0].size();
	long long x=0;
	vector<vector<int>> ans(n,vector<int>(m,-1));
	vector<int> l(n,0),r(n,m-1);
	for(int t=0;t<k;t++){
		vector<pii> v;
		for(int i=0;i<n;i++){
			x-=a[i][l[i]];
			v.push_back({a[i][l[i]]+a[i][r[i]],i});
		}
		sort(v.begin(),v.end());
		for(int i=0;i<n/2;i++)ans[v[i].sc][l[v[i].sc]++]=t;
		for(int i=n/2;i<n;i++){
			x+=v[i].fs;
			ans[v[i].sc][r[v[i].sc]--]=t;
		}
	}
	allocate_tickets(ans);
	return x;
}

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