Submission #471482

#	Time	Username	Problem	Language	Result	Execution time	Memory
471482		Rainbowbunny	Broken Device (JOI17_broken_device)	C++17	51 / 100	52 ms	2760 KiB

Anna

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

int num[] = {0, 0, 1, 0, 0, 1, 2, 3};
int sd[] = {0, 1, 1, 0, 2, 2, 2, 2};

void Anna(int n, long long X, int k, int P[])
{
    vector <int> A;
    vector <int> G;
    for(int i = 0; i < n; i++)
    {
        A.push_back(X & 1);
        X >>= 1;
        G.push_back(0);
    }
    for(int i = 0; i < k; i++)
    {
        G[P[i]] = 1; 
    }
    int pos = 0;
    for(int i = 0; i < n; i += 3)
    {
        int tmp = G[i] + 2 * G[i + 1] + 4 * G[i + 2];
        int t = 0;
        for(int j = 0; j < 8; j++)
        {
            if((tmp & j) == 0)
            {
                int zz = num[j], nn = 1;
                for(int k = 0; k < sd[j]; k++)
                {
                    zz -= nn * A[pos + k];
                    nn *= 2;
                }
                if(zz == 0)
                {
                    t = j;
                }
            }
        }
        for(int j = 0; j < 3; j++)
        {
            Set(i + j, (t >> j) & 1);
        }
        pos += sd[t];
    }
}

Bruno

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

int num[] = {0, 0, 1, 0, 0, 1, 2, 3};
int sd[] = {0, 1, 1, 0, 2, 2, 2, 2};

long long Bruno(int n, int A[])
{
    vector <int> V;
    for(int i = 0; i < n; i += 3)
    {
        int tmp = A[i] + A[i + 1] * 2 + A[i + 2] * 4;
        for(int j = 0; j < sd[tmp]; j++)
        {
            V.push_back((num[tmp] >> j) & 1);
        }    
    }
    long long ans = 0, bit = 1;
    for(int i = 0; i < 60; i++)
    {
        ans += bit * V[i];
        bit *= 2;
    }
    return ans;
}

• Subtask 1: 51 / 100