Submission #1055168

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055168		Malix	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	1 ms	436 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> tii;
typedef vector<ll> li;
typedef vector<li> lii;
 
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define LSOne(s) ((s)&(-s))
 
ll INF=1e18+10;
int inf=1e9+10;
ll M=1e9+7;

std::vector<std::vector<int>> devise_strategy(int n) {
  int m=24;int c=13;
  vii ans(m+1,vi(n+1));
  REP(i,0,m+1){
    if(((i+1)/2)%2==1)ans[i][0]=1;
    else ans[i][0]=0;
  }
  REP(j,2,n){
    if(j&(1<<(c-1)))ans[0][j]=1;
    else ans[0][j]=2;
  }
  REP(i,1,m+1){
    if(i%2==1){
      REP(j,1,n+1){
        if(j&(1<<(c-(i+1)/2))){
          if((1<<(c-(i+1)/2-1))<0){
            ans[i][j]=m;continue;
          }
          if(j&(1<<(c-(i+1)/2-1)))ans[i][j]=i+2;
          else ans[i][j]=i+3;
        }
        else {
          if(((i+1)/2)%2==1)ans[i][j]=-2;
          else ans[i][j]=-1;
        }
      }
    }
    else{
      REP(j,1,n+1){
        if(!(j&(1<<(c-(i+1)/2)))){
          if((1<<(c-(i+1)/2-1))<0){
            ans[i][j]=m;continue;
          }
          if(j&(1<<(c-(i+1)/2-1)))ans[i][j]=i+1;
          else ans[i][j]=i+2;
        }
        else {
          if(((i+1)/2)%2==1)ans[i][j]=-1;
          else ans[i][j]=-2;
        }
      }
    }
  }
  // ans[0][n]=-2;
  // ans[0][1]=-1;
  // int l=1,r=n;int p=0;
  // REP(i,1,m+1){
  //   if(p==0){
  //     ans[i][l]=-2;
  //     ans[i][r]=-1;
  //     l++;r--;
  //     i++;
  //     ans[i][l]=-2;
  //     ans[i][r]=-1;
  //     if(l>r)break;
  //   }
  //   else{
  //     ans[i][l]=-1;
  //     ans[i][r]=-2;
  //     l++;r--;
  //     i++;
  //     ans[i][l]=-1;
  //     ans[i][r]=-2;
  //     if(l>r)break;
  //   }
  //   p=1-p;
  // }
  REP(i,0,m+1)REP(j,0,n+1){
    if(ans[i][j]==m+1)ans[i][j]=-2;
    else if(ans[i][j]==m+2)ans[i][j]=-1;
  }
  REP(i,0,m+1)REP(j,0,n+1)if(ans[i][j]>m)ans[i][j]=m;
  return ans;
}

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