Submission #629939

#	Time	Username	Problem	Language	Result	Execution time	Memory
629939		TimDee	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	8 ms	704 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
using namespace std;

void fill(vector<vector<int>>&a, int n, int sz, int ind) {

  //cout<<"fill "<<sz<<' '<<ind<<'\n'; 
  //int x; cin>>x;

  if (sz<=8) {
    int x=(sz+1)>>1;
    for (int i=1; i<=n; ++i) {
      a[ind][i]=ind+((i-1)%sz)/2+1;
    }
    for (int i=ind+1; i<=ind+x; ++i) {
      a[i][0]=1;
      for (int j=1; j<=n; ++j) {
        if (((j-1)%sz)/2<i-ind-1) a[i][j]=-2;
        else if (((j-1)%sz)/2==i-ind-1) a[i][j]=ind+x+1;
        else a[i][j]=-1;
      }
    }
    for (int i=1; i<=n; ++i) if (i&1) a[ind+x+1][i]=-1; else a[ind+x+1][i]=-2;
    return;
  }

  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<(sz+4)/5) a[ind][i]=ind+1;
    else if ((i-1)%sz<2*((sz+4)/5)) a[ind][i]=ind+2;
    else if ((i-1)%sz<3*((sz+4)/5)) a[ind][i]=ind+3;
    else if ((i-1)%sz<4*((sz+4)/5)) a[ind][i]=ind+3;
    else a[ind][i]=ind+5;
  }
  a[ind+1][0]=1;
  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<(sz+4)/5) a[ind+1][i]=ind+6;
    else a[ind+1][i]=-1;
  }
  a[ind+2][0]=1;
  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<(sz+4)/5) a[ind+2][i]=-2;
    else if ((i-1)%sz<2*((sz+4)/5)) a[ind+2][i]=ind+6;
    else a[ind+2][i]=-1;
  }
  a[ind+3][0]=1;
  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<2*((sz+4)/5)) a[ind+3][i]=-2;
    else if ((i-1)%sz<3*((sz+4)/5)) a[ind+3][i]=ind+6;
    else a[ind+3][i]=-1;
  }
  a[ind+4][0]=1;
  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<3*((sz+4)/5)) a[ind+5][i]=-2;
    else if ((i-1)%sz<4*((sz+4)/5)) a[ind+5][i]=ind+6;
    else a[ind+5][i]=-1;
  }
  a[ind+5][0]=1;
  for (int i=1; i<=n; ++i) {
    if ((i-1)%sz<4*((sz+4)/5)) a[ind+5][i]=-2;
    else a[ind+5][i]=ind+6;
  }
  sz=(sz+4)/5;

  fill(a,n,sz,ind+6);

}

vector<vector<int>> devise_strategy(int n) {
  
  int sz=5000;
  //int need=0;
  //while (sz<n) {sz*=4; need+=5;}
  //cout<<need<<'\n';
  vector<vector<int>> a(30,vector<int>(n+1,0));

  fill(a,n,sz,0);

  for (int i=0; i<30; ++i) {
    //auto x=a[i];
    //cout<<i<<": ";
    //if (x[0]==0) cout<<"A "; else cout<<"B ";
    //for (auto y:x) cout<<y<<' '; cout<<'\n';
  }
  
  return a;

}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 90