Submission #729917

#	Time	Username	Problem	Language	Result	Execution time	Memory
729917		caganyanmaz	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	0 ms	212 KiB

prison

#include <bits/stdc++.h>
using namespace std;



constexpr static int LIM = 32;
vector<vector<int>> res;
void evaluate_a(int a, int n)
{
        res[a][0] = 0;
        int shft = 2 * (a / 5 - 1);
        for (int i = 1; i <= n; i++)
        {
                int oo = (i >> shft) & 3;
                res[a][i] = a - 5 + oo + 1;
        }
}

void evaluate_b(int a, int n)
{
        res[a][0] = 1;
        int shft = 2 * (a / 5);
        for (int i = 1; i <= n; i++)
        {
                int oo = (i >> shft) & 3;
                if (oo + 1 > (a % 5))
                        res[a][i] = -2;
                else if (oo + 1 < (a % 5))
                        res[a][i] = -1;
                else
                        res[a][i] = a - (a%5);
        }
}

void evaluate(int a, int n)
{
        if (a % 5)
                evaluate_b(a, n);
        else
                evaluate_a(a, n);

}
vector<vector<int>> devise_strategy(int n)
{
        res = vector<vector<int>>(LIM + 1, vector<int>(n+1));
        res[0][1] = 0;
        for (int i = 1; i <= n; i++)
                res[0][1] = 32 - (i>>12);
        for (int i = 31; i <= 32; i++)
        {
                res[i][0] = 1;
                for (int j = 1; j <= n; j++)
                {
                        if ((i&1) > (j>>12))
                                res[i][j] = -2;
                        else if ((i&1) < (j>>12))
                                res[i][j] = -1;
                        else
                                res[i][j] = 30;
                }
        }
        for (int i = 1; i <= 30; i++)
                evaluate(i, n);


        return res;
}

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