Submission #293679

#	Time	Username	Problem	Language	Result	Execution time	Memory
293679		VodkaInTheJar	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	2 ms	512 KiB

messy

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

int n;
void add_elements(int l, int r)
{
	if (l == r)
	return;
	
	int mid = (l + r) / 2;
	
	string s;
	for (int i = 0; i < n; i++)
	s += "1";
	
	for (int i = l; i <= r; i++)
	s[i] = '0';
	
	for (int i = l; i <= mid; i++)
	{
		s[i] = '1';
		add_element(s);
		s[i] = '0';
	}
	
	add_elements(l, mid);
	add_elements(mid + 1, r);
}

int p[128];
void get_elements(int l, int r, vector <int> el)
{
	if (l == r)
	{
		p[el[0]] = l;
		return;
	}
	
	vector <int> left;
	string s; 
	for (int i = 0; i < n; i++)
	s += "1";
	
	for (auto i: el)
	s[i] = '0';
	
	for (auto i: el)
	{
		s[i] = '1';
		if (check_element(s))
		left.push_back(i);
		
		s[i] = '0';
	}
	
	vector <int> right; 
	for (auto i: el)
	{
		bool is = false;
		for (auto j: left)
		if (i == j)
		{
			is = true;
			break;
		}
		
		if (!is)
		right.push_back(i);
	}
	
	int mid = (l + r) / 2; 
	get_elements(l, mid, left);
	get_elements(mid + 1, r, right);
}

vector <int> restore_permutation(int _n, int w, int r)
{
	n = _n; 
	
	add_elements(0, n-1);
	compile_set();
	
	vector <int> v;
	for (int i = 0; i < n; i++)
	v.push_back(i);
	
	get_elements(0, n-1, v);
	
	vector <int> ans;
	for (int i = 0; i < n; i++)
	ans.push_back(p[i]);
	
	return ans;
}

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30