Submission #199025

#	Time	Username	Problem	Language	Result	Execution time	Memory
199025		kostia244	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	11 ms	508 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
using namespace std;
string s;
void gen(int l, int r) {
	if(l+1 == r) {
		return;
	}
	int mid = (r+l)>>1;
	for(int i = l; i < mid; i++) {
		s[i] = '1';
		add_element(s);
		s[i] = '0';
	}
	for(int i = l; i < mid; i++) {
		s[i] = '1';
	}
	gen(mid, r);
	for(int i = l; i < mid; i++) {
		s[i] = '0';
	}
	for(int i = mid; i < r; i++) {
		s[i] = '1';
	}
	gen(l, mid);
	for(int i = mid; i < r; i++) {
		s[i] = '0';
	}
}
vector<int> ans;
void get(int l, int r, vector<int> indices) {
	if(l+1 == r) {
		ans[indices[0]] = l;
		return;
	}
	int mid = (l+r)>>1;
	vector<int> a, b;
	for(auto i : indices) {
		s[i] = '1';
		if(check_element(s))
			a.push_back(i);
		else
			b.push_back(i);
		s[i] = '0';
	}
	for(auto i : a) {
		s[i] = '1';
	}
	get(mid, r, b);
	for(auto i : a) {
		s[i] = '0';
	}
	for(auto i : b) {
		s[i] = '1';
	}
	get(l, mid, a);
	for(auto i : b) {
		s[i] = '0';
	}
}
std::vector<int> restore_permutation(int n, int w, int r) {
	s = string(n, '0');
    gen(0, n);
    compile_set();
    ans = vector<int>(n, -1);
    vector<int> ind;
    for(int i = 0; i < n; i++) ind.push_back(i);
    get(0, n, ind);
    return ans;
}

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