Submission #206557

#	Time	Username	Problem	Language	Result	Execution time	Memory
206557		batmend	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	7 ms	508 KiB

messy

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

string s;
vector<int> ans;
int n;

void rec1(int l, int r) {
	if (l == r) return;
	int m = (l + r) / 2;
	for (int i = 0; i < n; i++) s[i] = '1';
	for (int i = l; i <= r; i++) s[i] = '0';
	for (int i = l; i <= m; i++) {
		s[i] = '1';
		add_element(s);
		s[i] = '0';
	}
	rec1(l, m);
	rec1(m + 1, r);
}

void rec2(int l, int r, vector<int> v) {
	if (l == r) {
		ans[v[0]] = l;
		return;
	}
	int m = (l + r) / 2;
	for (int i = 0; i < n; i++) s[i] = '1';
	for (int x : v) s[x] = '0';
	vector<int> vl, vr;
	for (int x : v) {
		s[x] = '1';
		if (check_element(s)) vl.push_back(x);
		else vr.push_back(x);
		s[x] = '0';
	}
	rec2(l, m, vl);
	rec2(m + 1, r, vr);
}

std::vector<int> restore_permutation(int n1, int w, int r) {
	n = n1;
	s.resize(n);
	ans.resize(n);
	rec1(0, n - 1);    
    compile_set();
    vector<int> v;
    for (int i = 0; i < n; i++) v.push_back(i);
    rec2(0, n - 1, v);
	return(ans);
}

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