Submission #796323

#	Time	Username	Problem	Language	Result	Execution time	Memory
796323		TheSahib	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	2 ms	468 KiB

messy

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

using namespace std;

string s;

int N;


void f1(int l, int r){
    int mid = (l + r) / 2;
    fill(s.begin(), s.end(), '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';
    }
    if(l == r) return;
    f1(mid + 1, r);
    f1(l, mid);
}

vector<int> ans;

void f2(int l, int r){
    int mid = (l + r) / 2;
    fill(s.begin(), s.end(), '0');
    int cnt = 0;
    for (int i = 0; i < N; i++)
    {
        if(ans[i] == -1){
            cnt++;
            continue;
        }
        s[ans[i]] = '1';
    }
    int p = l;
    for (int i = 0; i < N; i++)
    {
        if(s[i] == '1') continue;
        s[i] = '1';
        if(cnt == 1 || check_element(s)) ans[p++] = i;
        s[i] = '0';
    }
    if(l == r) return;
    f2(mid + 1, r);
    fill(ans.begin() + l, ans.begin() + mid + 1, -1);
    f2(l, mid);
}

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

    ans.resize(n, -1);
    s.resize(n);

    f1(0, n - 1);
    compile_set();
    f2(0, n - 1);
    vector<int> tmp(N);
    for (int i = 0; i < N; i++)
    {
        tmp[ans[i]] = i;
    }
    
    return tmp;
}

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