Submission #1189522

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189522		stdfloat	Unscrambling a Messy Bug (IOI16_messy)	C++20	100 / 100	1 ms	584 KiB

messy

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

int N;

vector<int> res;

void f1(int l, int r) {
    if (l == r) return;

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

    int md = (l + r) >> 1;
    for (int i = l; i <= md; i++) {
        s[i] = '1';

        add_element(s);

        s[i] = '0';
    }

    f1(l, md);
    f1(md + 1, r);
}

void f2(int l, int r, vector<int> v) {
    if (l == r) return res[v[0]] = l, void();

    string s(N, '1');
    for (auto i : v)
        s[i] = '0';

    vector<int> u1, u2;
    for (auto i : v) {
        s[i] = '1';

        if (check_element(s)) u1.push_back(i);
        else u2.push_back(i);

        s[i] = '0';
    }

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

    f2(l, md, u1);
    f2(md + 1, r, u2);
}

vector<int> restore_permutation(int n, int w, int r) {
    N = n;

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

    f1(0, n - 1);

    compile_set();

    res.assign(N, 0);
    f2(0, n - 1, v);

    return res;
}

Compilation message (stderr)

messy.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
messy_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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