Submission #815145

#	Time	Username	Problem	Language	Result	Execution time	Memory
815145		Pikachu	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	468 KiB

messy

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

using namespace std;

vector<int> restore_permutation(int n, int w, int r) 
{
    vector<int> ans(n, -1);
    auto init = [&](auto init, int l, int r) -> void
    {
        if (l == r) return;
        string s(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';
        }
        init(init, l, mid);
        init(init, mid + 1, r);
    };
    init(init, 0, n - 1);
    compile_set();
    auto process = [&](auto process, int l, int r, vector<int> can) -> void
    {
        if (l == r) {
            ans[can[0]] = l;
            return;
        }
        string s(n, '1');
        for (int x : can) s[x] = '0';
        vector<int> nxcan[2];
        for (int x : can) {
            s[x] = '1';
            nxcan[!check_element(s)].push_back(x);
            s[x] = '0';
        }
        int mid = (l + r) >> 1;
        process(process, l, mid, nxcan[0]);
        process(process, mid + 1, r, nxcan[1]);
    };
    vector<int> can(n);
    iota(can.begin(), can.end(), 0);
    process(process, 0, n - 1, can);
    return ans;
}

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