Submission #586199

#	Time	Username	Problem	Language	Result	Execution time	Memory
586199		messiuuuuu	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	7 ms	9896 KiB

messy

#include<bits/stdc++.h>
#include <messy.h>
#define task "A"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e5 + 5;
const ll INF = 1e18 + 5;

int a[MAXN];
int n;

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

vector<int> phan[4 * MAXN], res;

void DNCAns(int id, int l, int r)
{
    if (l == r)
    {
        res[phan[id].back()] = l;
        return;
    }
    string s(n, '1');
    for (int i : phan[id])
    {
        s[i] = '0';
    }
    for (int i : phan[id])
    {
        s[i] = '1';
        if (check_element(s))
        {
            phan[2 * id].pb(i);
        } else
        {
            phan[2 * id + 1].pb(i);
        }
        s[i] = '0';
    }
    int mid = (l + r) / 2;
    DNCAns(2 * id, l, mid);
    DNCAns(2 * id + 1, mid + 1, r);
}

vector<int> restore_permutation(int N, int w, int r)
{
    res.resize(N);
    n = N;
    DNC(0, n - 1);
    compile_set();
    for (int i = 0; i < n; i++)
        phan[1].pb(i);
    DNCAns(1, 0, n - 1);
    return res;
}

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