Submission #1056273

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056273		mychecksedad	Prisoner Challenge (IOI22_prison)	C++17	60 / 100	11 ms	1316 KiB

prison

#include "prison.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define ll long long int
#define en cout << '\n'
#define pi pair<int,int>
#define vi vector<int> 
#define ff first
#define ss second

std::vector<std::vector<int>> devise_strategy(int n) {
  vector<vector<int>> ans(26, vector<int>(n+1, 0));
  ans[0][0] = 0;
  for(int i = 1; i <= n; ++i){
    ans[0][i] = (i&(4096)) ? 2 : 1;
  }
  int tot = 13;
  for(int i = 1; i <= 25; ++ i){
    int bit = tot-(i+1)/2;
    // cout << bit << ' ';
    int cur;
    if(bit % 2 == 1){
      ans[i][0] = 0;
      cur = 1;
    }else{
      ans[i][0] = 1;
      cur = 2;
    }

    int nx = (1<<(bit-1));

    for(int j = 1; j <= n; ++j){
      if((j&(1<<bit))){
        if(i % 2 == 1){
          ans[i][j] = -(3-cur);
        }else{
          if(j&nx){
            ans[i][j] = i + 2;
          }else{
            ans[i][j] = i + 1;
          }
        }
      }else{
        if(i % 2 == 0){
          ans[i][j] = -cur;
        }else{
          if(j&(nx)){
            ans[i][j] = i + 3;
          }else{
            ans[i][j] = i + 2;
          }
        }
      }
      if(ans[i][j] == 26) ans[i][j] = -(3-cur);
      if(ans[i][j] == 27) ans[i][j] = -cur;
    }
  }
  // for(auto &v: ans){
  //   for(auto &u: v){
  //     if(u == 26) u = 1;
  //   }
  // }
  return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 50 / 90