Submission #765988

#	Time	Username	Problem	Language	Result	Execution time	Memory
765988		SanguineChameleon	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	5 ms	496 KiB

messy

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

int n;

string make1(int lt, int rt, int x) {
	string res;
	for (int i = 0; i < n; i++) {
		if (i != x && lt <= i && i <= rt) {
			res += "0";
		}
		else {
			res += "1";
		}
	}
	return res;
}

void solve1(int lt, int rt) {
	if (lt == rt) {
		return;
	}
	int mt = (lt + rt) / 2;
	for (int i = lt; i <= mt; i++) {
		add_element(make1(lt, rt, i));
	}
	solve1(lt, mt);
	solve1(mt + 1, rt);
}

string make2(vector<int> cand, int x) {
	string res;
	for (int i = 0; i < n; i++) {
		if (i != x && find(cand.begin(), cand.end(), i) != cand.end()) {
			res += "0";
		}
		else {
			res += "1";
		}
	}
	return res;
}

vector<int> res;

void solve2(int lt, int rt, vector<int> cand) {
	if (lt == rt) {
		res[cand[0]] = lt;
		return;
	}
	int mt = (lt + rt) / 2;
	vector<int> left;
	vector<int> right;
	for (auto x: cand) {
		if (check_element(make2(cand, x))) {
			left.push_back(x);
		}
		else {
			right.push_back(x);
		}
	}
	solve2(lt, mt, left);
	solve2(mt + 1, rt, right);
}

vector<int> restore_permutation(int _n, int w, int r) {
	n = _n;
	solve1(0, n - 1);
	compile_set();
	vector<int> cand(n);
	for (int i = 0; i < n; i++) {
		cand[i] = i;
	}
	res.resize(n);
	solve2(0, n - 1, cand);
	return res;
}

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