Submission #139771

#	Time	Username	Problem	Language	Result	Execution time	Memory
139771		toonewbie	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	4 ms	532 KiB

messy

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

using namespace std;

int n;
vector <int> p;
void add_all(int l, int r) {
  if (l == r) return;
  int mid = (l + r) >> 1;
  string s(n, '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_all(l, mid);
  add_all(mid + 1, r);
}
void solve(int l, int r, vector <int> can) {
  if (l == r) {
    p[can[0]] = l;
    return;
  }
  int mid = (l + r) >> 1;
  string s(n, '1');
  vector <int> lft, rgt;
  for (int i : can) s[i] = '0';
  for (int i : can) {
    s[i] = '1';
    if (check_element(s) == 1) {
      lft.push_back(i);
    } else {
      rgt.push_back(i);
    }
    s[i] = '0';
  }
  solve(l, mid, lft);
  solve(mid + 1, r, rgt);
}

vector<int> restore_permutation(int N, int w, int r) {
  n = N;
  p.resize(n);
  add_all(0, n - 1);
  compile_set();
  vector <int> can(n);
  for (int i = 0; i < n; i++) can[i] = i;
  solve(0, n - 1, can);
  return p;
}

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