Submission #1078455

#	Time	Username	Problem	Language	Result	Execution time	Memory
1078455		raphaelp	Broken Device (JOI17_broken_device)	C++14	0 / 100	53 ms	2856 KiB

Anna

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

void Anna(int N, long long X, int K, int P[])
{
    vector<int> P2(N);
    for (int i = 0; i < K; i++)
        P2[P[i]] = 1;
    vector<int> bits;
    while (X)
    {
        bits.push_back(X % 2);
        X /= 2;
    }
    int M = bits.size();
    reverse(bits.begin(), bits.end());
    vector<vector<pair<int, int>>> dp(N + 5, vector<pair<int, int>>(M + 1));
    vector<int> ans(N, 0);
    dp[0][0].first = 1;
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < M; j++)
        {
            if (dp[i][j].first)
            {
                dp[i + 1][j].first = 1;
                if (bits[j] == 0 && P2[i] == 0)
                {
                    dp[i + 2][j + 1].first = 2;
                }
                if (bits[j] == 1 && i < N - 1 && P2[i] == 0 && P2[i + 1] == 0)
                {
                    dp[i + 3][j + 1].first = 3;
                }
                /*if (i < N - 2 && P2[i] == 0 && P2[i + 1] == 0 && P2[i + 2] == 0)
                {
                    dp[i + 4][j].second = 4;
                }*/
            }
            if (dp[i][j].second)
            {
                dp[i + 1][j].second = 1;
                if (bits[j] == 1 && P2[i] == 0)
                {
                    dp[i + 2][j + 1].second = 2;
                }
                if (bits[j] == 0 && i < N - 1 && P2[i] == 0 && P2[i + 1] == 0)
                {
                    dp[i + 3][j + 1].second = 3;
                }
                /*if (i < N - 2 && P2[i] == 0 && P2[i + 1] == 0 && P2[i + 2] == 0)
                {
                    dp[i + 4][j].first = 4;
                }*/
            }
        }
    }
    int x = N + 3;
    while (true)
    {
        if (x == -1)
            break;
        if (dp[x][M].first)
            break;
        if (dp[x][M].second)
        {
            x += 200;
            break;
        }
        x--;
    }
    int y = M;
    while (x > 0)
    {
        if (x >= 200)
        {
            x -= 200;
            int temp = dp[x][y].second;
            x--;
            for (int i = 1; i < temp; i++)
            {
                x--;
                ans[x] = 1;
            }
            if (temp == 2 || temp == 3)
                y--;
            if (temp < 4)
                x += 200;
        }
        else
        {
            int temp = dp[x][y].first;
            x--;
            for (int i = 1; i < temp; i++)
            {
                x--;
                ans[x] = 1;
            }
            if (temp == 2 || temp == 3)
                y--;
            if (temp == 4)
                x += 200;
        }
    }
    for (int i = 0; i < N; i++)
    {
        // cout << ans[i] << ' ';
        Set(i, ans[i]);
    }
}
/*int main()
{
    long long N, X, K;
    cin >> N >> X >> K;
    int P[N];
    srand(time(0));
    for (int i = 0; i < K; i++)
        P[i] = rand() % N;
    Anna(N, X, K, P);
}*/

Bruno

#include "Brunolib.h"
#include <bits/stdc++.h>
using namespace std;
long long Bruno(int N, int A[])
{
    long long X = 0;
    long long cur = 0;
    long long mult = 1;
    for (int i = 0; i < N; i++)
    {
        if (A[i])
            cur++;
        else
        {
            if (cur)
            {
                if (cur == 3)
                    mult = 1 - mult;
                if (cur == 2)
                {
                    X *= 2;
                    X += mult;
                }
                if (cur == 1)
                {
                    X *= 2;
                    X += 1 - mult;
                }
            }
            cur = 0;
        }
    }
    if (cur)
    {
        if (cur == 3)
            mult = 1 - mult;
        if (cur == 2)
        {
            X *= 2;
            X += mult;
        }
        if (cur == 1)
        {
            X *= 2;
            X += 1 - mult;
        }
    }
    return X;
}
/*int main()
{
    int N;
    cin >> N;
    int A[N];
    for (int i = 0; i < N; i++)
        cin >> A[i];
    cout << Bruno(N, A);
}*/

• Subtask 1: 0 / 100