Submission #1011637

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011637		bachhoangxuan	Prisoner Challenge (IOI22_prison)	C++17	65 / 100	9 ms	1368 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
using namespace std;
const int X=8;
const int D=3;

vector<vector<int>> devise_strategy(int N) {
    vector<vector<int>> s(X*D+1,vector<int>(N+1,0));
    vector<int> p(X,1);
    for(int i=1;i<X;i++) p[i]=p[i-1]*D;

    s[0][0]=X&1;
    for(int i=1;i<=N;i++) s[0][i]=D*(X-1)+(i/p[X-1])%D+1;
    for(int t=0;t<X;t++) for(int a=0;a<D;a++){
        int i=t*D+a+1;
        s[i][0]=t&1;
        for(int j=1;j<=N;j++){
            int b=(j/p[t])%D;
            if(a>b) s[i][j]=-s[i][0]-1;
            else if(a<b) s[i][j]=-(s[i][0]^1)-1;
            else if(t) s[i][j]=D*(t-1)+(j/p[t-1])%D+1;
        }
    }
    return s;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 55 / 90