Submission #626774

#	Time	Username	Problem	Language	Result	Execution time	Memory
626774		whynotshadow	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	1 ms	212 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
//#include <cassert>
//#include <cstdio>
//
//#include <string>
//#include <vector>
using namespace std;
typedef int ll;
const ll N=1e6+9;
ll a,b,c,d,a1,b1,c1,val,i,sum1,j,n,m,pos,ans,sum,cur,res,ans1,res1;
ll k,kk,kkk,cnt,cnt1,l,r,x,y,mn,t,fl,q,bit;
vector<vector<int>> devise_strategy(int N) {
    vector<vector<ll>>v(27,vector<ll>(N+1));
    v[0][0]=0;
    for(ll i=1;i<=N;i++){
        v[0][i]=26+(i>>13&1);
    }
    for(ll i=1; i<=26; i++){
        /// x = 2 * pos + bit
        /// when x%2 == 0 -> ask(1)
        if(i==1){
            for(ll j=0;j<=N;j++){
                v[i][j]=1;
            }
            continue;
        }
        bit=0;
        if(i&1) bit=1;
        pos=(i-(i&1))>>1;
        v[i][0]=1-pos%2;
        for(ll j=1;j<=N;j++){
            if(v[i][0]==0) v[i][j]=2*(pos-1)+(j>>(pos-1)&1);
            else{
                if(bit==0 && (j>>pos&1)) v[i][j]=-1;
                else if(bit==1 && (j>>pos&1)==0) v[i][j]=-2;
                else v[i][j]=2*pos+(j>>pos&1);
            }
        }
    }
    return v;
}

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