Submission #800701

#	Time	Username	Problem	Language	Result	Execution time	Memory
800701		kirakaminski968	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	468 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;
int n, occ[128];
void solve(int l, int r){
  if(l == r) return; 
  string s; 
  for(int i = 0;i<n;++i) s.push_back('0'); 
  for(int i = l;i<=r;++i) s[i] = '1'; 
  int mid = (l+r)/2; 
  for(int j = mid+1;j<=r;++j){
    s[j] = '0'; 
    add_element(s); 
    s[j] = '1'; 
  }
  solve(l,mid); 
  solve(mid+1,r); 
}

void solve2(int l, int r, vector<int> v){
  if(l == r){
    occ[v[0]] = l; 
    return; 
  }
  int mid = (l+r)/2; 
  string s; 
  for(int i = 0;i<n;++i) s.push_back('0'); 
  for(auto x : v) s[x] = '1'; 
  vector<int> low, high; 
  for(auto x : v){
    s[x] = '0'; 
    if(check_element(s)) high.push_back(x); 
    else low.push_back(x); 
    s[x] = '1'; 
  }
  solve2(l,mid,low); 
  solve2(mid+1,r,high); 
}

vector<int> restore_permutation(int N, int w, int r) {
  n = N; 
  solve(0,N-1); 
  compile_set(); 
  vector<int> vec;
  for(int i = 0;i<n;++i) vec.push_back(i);
  solve2(0,n-1,vec);
  vector<int> ans;
  for(int i=0; i<n; i++) ans.push_back(occ[i]);
  return ans;
}

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