Submission #796317

#	Time	Username	Problem	Language	Result	Execution time	Memory
796317		NothingXD	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	500 KiB

messy

#include <vector>
#include "messy.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out() {cerr << endl;}

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cerr << H << ' ';
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

int n;
string s;

void build(int l, int r){
	if (l + 1 == r) return;
	int mid = (l + r) >> 1;
	for (int i = l; i < mid; i++){
		s[i] = '1';
		//debug(s);
		add_element(s);
		s[i] = '0';
	}
	for (int i = mid; i < r; i++){
		s[i] = '1';
	}
	build(l, mid);
	for (int i = mid; i < r; i++){
		s[i] = '0';
	}
	for (int i = l; i < mid; i++){
		s[i] = '1';
	}
	build(mid, r);
	for (int i = l; i < mid; i++){
		s[i] = '0';
	}
}

const int maxn = 1e5 + 10;

int p[maxn];

void solve(vector<int> idx, int l, int r){
	if (l + 1 == r){
		p[idx[0]] = l;
		return;
	}
	vector<int> lc, rc;
	for (auto x: idx){
		s[x] = '1';
		if (check_element(s)) lc.push_back(x);
		else rc.push_back(x);
		s[x] = '0';
	}
	int mid = (l + r) >> 1;
	for (auto x: rc) s[x] = '1';
	solve(lc, l, mid);
	for (auto x: rc) s[x] = '0';
	for (auto x: lc) s[x] = '1';
	solve(rc, mid, r);
	for (auto x: lc) s[x] = '0';
}

vector<int> restore_permutation(int N, int w, int r) {
	n = N;
	for (int i = 0; i < n; i++) s.push_back('0');
	build(0, n);
	compile_set();
	vector<int> idx;
	for (int i = 0; i < n; i++){
		idx.push_back(i);
	}
	solve(idx, 0, n);
	vector<int> ans(n);
	for (int i = 0; i < n; i++) ans[i] = p[i];
	return ans;
}

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