Submission #585341

#	Time	Username	Problem	Language	Result	Execution time	Memory
585341		Drew_	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	568 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back

vector<int> restore_permutation(int n, int w, int r)
{
    const auto build = [&](const auto &self, int l, int r) -> void
    {
        if (l == r)
            return;

        int mid = (l + r) >> 1;
        for (int i = l; i <= mid; ++i)
        {
            string s = string(l, '1') + string(r-l+1, '0') + string(n-r-1, '1');
            s[i] = '1';
            add_element(s);
        }
        self(self, l, mid);
        self(self, mid+1, r);
    };
    build(build, 0, n-1);

    compile_set();
    
    vector<int> res(n);
    iota(res.begin(), res.end(), 0);

    const auto solve = [&](const auto &self, int l, int r) -> void
    {
        if (l == r)
            return;

        int mid = (l + r) >> 1;

        string s = string(n, '0');
        for (int i = 0; i < l; ++i)
            s[res[i]] = '1';
        for (int i = r+1; i < n; ++i)
            s[res[i]] = '1';

        vector<int> lt, rt;
        for (int i = l; i <= r; ++i)
        {
            s[res[i]] = '1';
            if (check_element(s))
                lt.pb(res[i]);
            else rt.pb(res[i]);
            s[res[i]] = '0';
        }

        for (int i = l; i <= mid; ++i)
            res[i] = lt[i-l];
        for (int i = mid+1; i <= r; ++i)
            res[i] = rt[i-mid-1];

        self(self, l, mid);
        self(self, mid+1, r);
    };
    solve(solve, 0, n-1);

    vector<int> tmp(n);
    for (int i = 0; i < n; ++i)
        tmp[res[i]] = i; 

    return tmp;
}

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