Submission #1199736

#	Time	Username	Problem	Language	Result	Execution time	Memory
1199736		dong_gas	Unscrambling a Messy Bug (IOI16_messy)	C++20	100 / 100	1 ms	584 KiB

messy

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

int N;
vector<int> ans, idx;

void add(int l, int r) {
    if (l == r) return;
    string s(N, '1');
    int mid = l + r >> 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';
    }
    add(l, mid), add(mid + 1, r);
}

void ask(int l, int r, vector<int> a) {
    if (l == r) {
        ans[a[0]] = l;
        return;
    }
    string s(N, '1');
    vector<int> lidx, ridx;
    for (int aidx: a) s[aidx] = '0';
    for (int aidx: a) {
        s[aidx] = '1';
        if (check_element(s)) lidx.push_back(aidx);
        else ridx.push_back(aidx);
        s[aidx] = '0';
    }
    int mid = l + r >> 1;
    ask(l, mid, lidx), ask(mid + 1, r, ridx);
}

vector<int> restore_permutation(int n, int w, int r) {
    N = n, ans.resize(n, 0), idx.resize(n), iota(idx.begin(), idx.end(), 0);
    
    add(0, n - 1);
    compile_set();
    ask(0, n - 1, idx);
    return ans;
}

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