Submission #855601

#	Time	Username	Problem	Language	Result	Execution time	Memory
855601		JooDdae	Unscrambling a Messy Bug (IOI16_messy)	C++17	20 / 100	1 ms	604 KiB

messy

#include "messy.h"

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define mid ((l+r) >> 1)

void add(int l, int r, int n) {
	if(l == r) return;

	string s(n, '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(l, mid, n);
	add(mid+1, r, n);
}

vector<int> ans;

void solve(int l, int r, int n, vector<int> v) {
	if(l == r) {
		ans.push_back(v[0]);
		return;
	}

	string s(n, '1');
	for(auto x : v) s[x] = '0';
	
	vector<int> v1, v2;
	for(int x : v) {
		s[x] = '1';
		if(check_element(s)) v1.push_back(x);
		else v2.push_back(x);
		s[x] = '0';
	}

	solve(l, mid, n, v1);
	solve(mid+1, r, n, v2);
}

vector<int> restore_permutation(int n, int w, int r) {
	add(0, n-1, n);

	compile_set();

	vector<int> v(n); iota(v.begin(), v.end(), 0);
	solve(0, n-1, n, v);

	return ans;
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 18
• Subtask 3: 0 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30