Submission #131223

#	Time	Username	Problem	Language	Result	Execution time	Memory
131223		mahmoudbadawy	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	4 ms	508 KiB

messy

#include <vector>

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

using namespace std;

int ans[200];
int n;

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

void solve(int l,int r,vector<int> ind)
{
	/*cout << l << " " << r << " : ";
	for(int i:ind) cout << i << " ";
	cout << endl;*/
	if(l==r)
	{
		ans[ind[0]]=l;
		return;
	}
	vector<int> ll,rr;
	string s=string(n,'1');
	for(int i:ind) s[i]='0';
	for(int i:ind)
	{
		s[i]='1';
		//cout << s << endl;
		if(check_element(s))
			ll.push_back(i);
		else
			rr.push_back(i);
		s[i]='0';
	}
	int mid=(l+r)/2;
	solve(l,mid,ll);
	solve(mid+1,r,rr);
}

std::vector<int> restore_permutation(int nn, int w, int r) {
    /*add_element("0");
    compile_set();
    check_element("0");
    return std::vector<int>();*/
    n=nn;
    //cout << "OK" << endl;
    build(0,n-1);
    //cout << "OK" << endl;
    compile_set();
    //cout << "OK" << endl;
    vector<int> v;
    for(int i=0;i<n;i++) v.push_back(i);
    solve(0,n-1,v);
	vector<int> ret;
	for(int i=0;i<n;i++) ret.push_back(ans[i]);
	//for(int i:ret) cout << i << " "; cout << endl;
	return ret;
}

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