Submission #135874

#	Time	Username	Problem	Language	Result	Execution time	Memory
135874		Kastanda	Unscrambling a Messy Bug (IOI16_messy)	C++11	100 / 100	5 ms	524 KiB

messy

// ItnoE
#include<bits/stdc++.h>
#include "messy.h"
using namespace std;
const int N = 179;
int n, P[N];
void Solve(int l, int r, vector < int > vec)
{
	assert((int)vec.size() == r - l);
	if (r - l == 1)
	{
		P[vec[0]] = l;
		return ;
	}

	int md = (l + r) >> 1;
	vector < int > vel, ver;
	string def = "";
	for (int i = 0; i < n; i ++)
		def += "1";
	for (int v : vec)
	{
		string s = def;
		for (int u : vec)
			s[u] = '0';
		s[v] = '1';
		if (check_element(s))
			vel.push_back(v);
		else
			ver.push_back(v);
	}
	Solve(l, md, vel);
	Solve(md, r, ver);
}
vector < int > restore_permutation(int _n, int w, int r)
{
	n = _n;
	for (int len = 2; len <= n; len <<= 1)
		for (int l = 0, r = len; r <= n; l += len, r += len)
		{
			int md = (l + r) >> 1;
			for (int i = l; i < md; i ++)
			{
				string s = "";
				for (int j = 0; j < n; j ++)
					s += "1";
				for (int j = l; j < i; j ++)
					s[j] = '0';
				for (int j = i + 1; j < r; j ++)
					s[j] = '0';
				add_element(s);
			}
		}
	compile_set();
	vector < int > vec;
	for (int i = 0; i < n; i ++)
		vec.push_back(i);
	Solve(0, n, vec);
	vector < int > ret;
	for (int i = 0; i < n; i ++)
		ret.push_back(P[i]);
	return (ret);
}

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