Submission #639489

#	Time	Username	Problem	Language	Result	Execution time	Memory
639489		piOOE	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	480 KiB

messy

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

using namespace std;

vector<int> restore_permutation(int n, int w, int r) {
    vector<int> p(n, -1);
    function<void(int, int)> init = [&](int l, int r) {
        if (l + 1 == r) {
            return;
        }
        string s(n, '1');
        int mid = (l + r) >> 1;
        fill(s.begin() + l, s.begin() + r, '0');
        for (int i = mid; i < r; ++i) {
            s[i] = '1';
            add_element(s);
            s[i] = '0';
        }
        init(l, mid);
        init(mid, r);
    };
    init(0, n);
    compile_set();
    function<void(int, int, vector<int>)> solve = [&](int l, int r, vector<int> a) {
        if (l + 1 == r) {
            p[a[0]] = l;
            return;
        }
        string s(n, '1');
        for (int i: a) {
            s[i] = '0';
        }
        vector<int> on, off;
        for (int i: a) {
            s[i] = '1';
            if (check_element(s)) {
                on.push_back(i);
            } else {
                off.push_back(i);
            }
            s[i] = '0';
        }
        int mid = (l + r) >> 1;
        solve(l, mid, off);
        solve(mid, r, on);
    };
    vector<int> a(n);
    iota(a.begin(), a.end(), 0);
    solve(0, n, a);
    return p;
}

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