Submission #1041989

#	Time	Username	Problem	Language	Result	Execution time	Memory
1041989		MarwenElarbi	Carnival Tickets (IOI20_tickets)	C++17	11 / 100	1 ms	860 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
#define pb push_back
#define se second
#define fi first
long long sum(vector<int> tab){
	int n=tab.size();
	long long res=0;
	sort(tab.begin(),tab.end());
	for (long long i = 0; i < n; ++i)
	{
		res+=abs(tab[i]-tab[n/2]);
	}
	return res;
}
long long find_maximum(int k, std::vector<std::vector<int>> x) {
	long long n = x.size();
	int m = x[0].size();
	vector<std::vector<int>> ans(n,vector<int> (m,-1));
	long long res=0;
	vector<pair<int,int>> mx;
	vector<pair<int,int>> mn;
	for (int i = 0; i < n; ++i)
	{
		mx.pb({x[i][m-1],i});
		mn.pb({x[i][0],i});
	}
	vector<int> tab;
	sort(mx.begin(),mx.end());
	sort(mn.begin(),mn.end());
	for (int i = 0; i < n/2; ++i)
	{
		ans[mn[i].se][0]=0;
		ans[mx[i+n/2].se][m-1]=0;
		tab.pb(mx[i+n/2].fi);
		tab.pb(mn[i].fi);
	}
	allocate_tickets(ans);
	res+=sum(tab);
	return res;
}

• 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