Submission #672509

#	Time	Username	Problem	Language	Result	Execution time	Memory
672509		Trisanu_Das	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	468 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int>P;
 
int N;
void add(int l,int r){
	if(r - l==1)return;
	int m = (l + r) / 2;
	string s(N,'0');
	for(int i = l; i < r; i++) s[i] = '1';
	for(int i = l;i < m ;i++){
		s[i] = '0';
		add_element(s);
		s[i] = '1';
	}
	add(l, m); add(m, r);
}
 
vector<int>u;
 
void solve(vector<int> v){
	if(v.size() == 1) return;
	string s(N,'0');
	for(int i : v) s[i] = '1';
	int add = v.size()/2;
	vector<int> a, b;
	for(int i : v){
		s[i] = '0';
		if(check_element(s)) a.push_back(i);
		else b.push_back(i), u[i] += add;
		s[i] = '1';
	}
	solve(a); solve(b);
}
 
vector<int> restore_permutation(int n, int w, int r) {
	N = n;
	add(0,N);
	compile_set();
	vector<int>v(n);
	for(int i = 0; i < n; i++) v[i] = i;
	u = vector<int>(n);
	solve(v);
	return u;
}

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