Submission #141136

#	Time	Username	Problem	Language	Result	Execution time	Memory
141136		Namnamseo	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	4 ms	556 KiB

messy

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

#include "messy.h"

char s[200];

void search(int tl, int tr) {
	if(tl+1 == tr) {
		return;
	}

	int mid = (tl+tr) / 2;
	for(int i = tl; i < mid; ++i) {
		s[i] = '1';
		add_element(s);
		s[i] = '0';
	}

	fill(s+tl, s+mid, '1');
	search(mid, tr);
	fill(s+tl, s+mid, '0');

	fill(s+mid, s+tr, '1');
	search(tl, mid);
	fill(s+mid, s+tr, '0');
}

int ans[200];

void hcraes(int tl, int tr) {
	int mid = (tl + tr) / 2;
	if(tl+1 == tr) return;

	for(int i=tl, ni=tl; i<tr; ++i) {
		s[ans[i]] = '1';
		bool res = check_element(s);
		s[ans[i]] = '0';

		if(res) {
			swap(ans[i], ans[ni++]);
		}
	}

	for(int i=mid; i<tr; ++i) s[ans[i]] = '1';
	hcraes(tl, mid);
	for(int i=mid; i<tr; ++i) s[ans[i]] = '0';

	for(int i=tl; i<mid; ++i) s[ans[i]] = '1';
	hcraes(mid, tr);
	for(int i=tl; i<mid; ++i) s[ans[i]] = '0';
}

std::vector<int> restore_permutation(int n, int w, int r) {
	fill(s, s+n, '0');
	search(0, n);

    compile_set();

	iota(ans, ans+n, 0);
	fill(s, s+n, '0');
	hcraes(0, n);

	vector<int> ret(n);
	for(int i=0; i<n; ++i) ret[ans[i]] = i;
	return ret;
}

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