제출 #94577

#제출 시각아이디문제언어결과실행 시간메모리
94577wxh010910Unscrambling a Messy Bug (IOI16_messy)C++17
100 / 100
4 ms512 KiB
#include <bits/stdc++.h>
#include "messy.h"

using namespace std;

vector<int> restore_permutation(int n, int w, int r) {
  for (int i = n >> 1; i; i >>= 1) {
    for (int j = 0; j < n; j += i << 1) {
      string s(n, '0');
      for (int k = 0; k < i << 1; ++k) {
        s[j + k] = '1';
      }
      for (int k = 0; k < i; ++k) {
        s[j + k + i] = '0';
        add_element(s);
        s[j + k + i] = '1';
      }
    }
  }
  compile_set();
  vector<int> p(n);
  for (int i = 0; i < n; ++i) {
    p[i] = i;
  }
  for (int i = n >> 1; i; i >>= 1) {
    for (int j = 0; j < n; j += i << 1) {
      string s(n, '0');
      for (int k = 0; k < i << 1; ++k) {
        s[p[j + k]] = '1';
      }
      vector<int> left, right;
      for (int k = 0; k < i << 1; ++k) {
        s[p[j + k]] = '0';
        if (check_element(s)) {
          right.push_back(p[j + k]);
        } else {
          left.push_back(p[j + k]);
        }
        s[p[j + k]] = '1';
      }
      for (int k = 0; k < i; ++k) {
        p[j + k] = left[k];
        p[j + k + i] = right[k];
      }
    }
  }
  vector<int> ans(n);
  for (int i = 0; i < n; ++i) {
    ans[p[i]] = i;
  }
  return ans;
}
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