Submission #785181

#	Time	Username	Problem	Language	Result	Execution time	Memory
785181		vjudge1	Prisoner Challenge (IOI22_prison)	C++17	65 / 100	13 ms	1108 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int>> devise_strategy(int N) {
    vector a(25, vector<int>(N + 1));
    for (int i = 13; i <= 24; i++) {
        a[i][0] = 1;
    }
    for (int j = 1; j <= N; j++) {
        for (int i = 0; i <= 12; i++) {
            int t = (12 - i) / 2 * 2;
            if (i % 2 != (j >> (t + 1) & 1)) {
                a[i][j] = -2 + i % 2;
            } else {
                a[i][j] = 26 - t - (j >> t & 1);
                if (t == 0) {
                    a[i][j] = -1 - a[i][j] % 2;
                }
            }
        }
        for (int i = 13; i <= 24; i++) {
            int t = (26 - i) / 2 * 2 - 1;
            if (i % 2 != (j >> (t + 1) & 1)) {
                a[i][j] = -1 - i % 2;
            } else {
                a[i][j] = 13 - t - (j >> t & 1);
            }
        }
    }
    return a;
}

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