Submission #683456

#	Time	Username	Problem	Language	Result	Execution time	Memory
683456		Jarif_Rahman	Prisoner Challenge (IOI22_prison)	C++17	48.50 / 100	21 ms	1356 KiB

prison

#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

vector<vector<int>> devise_strategy(int N){
    int X = 32;
    vector<vector<int>> ans(X, vector<int>(N+1, 0));

    vector<int> pw(10, 1);
    for(int i = 1; i < 10; i++) pw[i] = pw[i-1]*3;

    for(int i = 0; i < X; i++){
        int x = i/8;
        if(x == 0) ans[i][0] = 0;
        else ans[i][0] = 1;

        for(int j = 1; j <= N; j++){
            int pos = 7-(i%8);
            int b = (j%pw[pos+1])/pw[pos];
            if(x == 0) ans[i][j] = (7-pos)+(b+1)*8;
            else if(b > x-1) ans[i][j] = -1;
            else if(b < x-1) ans[i][j] = -2;
            else ans[i][j] = 7-pos+1;
        }
    }

    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 38.5 / 90