Submission #1020530

#	Time	Username	Problem	Language	Result	Execution time	Memory
1020530		huutuan	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	1 ms	604 KiB

messy

#include <vector>

#include "messy.h"

#include <bits/stdc++.h>

using namespace std;

vector<int> restore_permutation(int n, int w, int r) {
   int lg=31-__builtin_clz(n);
   vector<int> ans(n);
   string s(n, '0');
   for (int i=0; i<lg; ++i){
      vector<int> v;
      for (int j=0; j<n; ++j) if (j>>i&1) v.push_back(j);
      for (int j:v){
         s[j]^=1;
         add_element(s);
         s[j]^=1;
      }
      for (int j:v) s[j]^=1;
   }
   compile_set();
   string t(n, '0');
   for (int i=0; i<lg; ++i){
      vector<int> v;
      for (int j=0; j<n; ++j){
         t[j]^=1;
         if (check_element(t)) v.push_back(j);
         t[j]^=1;
      }
      for (int j:v) ans[j]^=1<<i, t[j]^=1;
   }
   return ans;
}

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