Submission #207281

#TimeUsernameProblemLanguageResultExecution timeMemory
207281autumn_eelUnscrambling a Messy Bug (IOI16_messy)C++14
100 / 100
7 ms508 KiB
#include "messy.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef pair<int,int>P;

int N;
void add(int l,int r){
	if(r-l==1)return;
	int md=(l+r)/2;
	string s(N,'0');
	for(int i=l;i<r;i++)s[i]='1';
	for(int i=l;i<md;i++){
		s[i]='0';
		add_element(s);
		s[i]='1';
	}
	add(l,md);
	add(md,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);
	rep(i,n)v[i]=i;
	u=vector<int>(n);
	solve(v);
	return u;
}
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