Submission #1192412

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192412		onbert	Unscrambling a Messy Bug (IOI16_messy)	C++20	100 / 100	1 ms	584 KiB

messy

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

string s;
void build(int l, int r) {
    if (l == r) return;
    int mid = (l+r)/2;
    for (int i=l;i<=mid;i++) {
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    for (int i=mid+1;i<=r;i++) s[i] = '1';
    build(l, mid);
    for (int i=mid+1;i<=r;i++) s[i] = '0';

    for (int i=l;i<=mid;i++) s[i] = '1';
    build(mid+1, r);
    for (int i=l;i<=mid;i++) s[i] = '0';
}

vector<int> ans;
void solve(int l, int r, vector<int> vec) {
    if (l == r) {
        ans[vec[0]] = l;
        return;
    }
    int mid = (l+r)/2;
    vector<int> L, R;
    for (int i:vec) {
        s[i] = '1';
        if (check_element(s)) L.push_back(i);
        else R.push_back(i);
        s[i] = '0';
    }
    for (int i:R) s[i] = '1';
    solve(l, mid, L);
    for (int i:R) s[i] = '0';

    for (int i:L) s[i] = '1';
    solve(mid+1, r, R);
    for (int i:L) s[i] = '0';
}

vector<int> restore_permutation(int n, int w, int r) {
    s = "";
    for (int i=0;i<n;i++) s += '0';
    build(0, n-1);
    compile_set();
    ans.resize(n);
    vector<int> all;
    for (int i=0;i<n;i++) all.push_back(i);
    solve(0, n-1, all);
    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