Submission #561950

#	Time	Username	Problem	Language	Result	Execution time	Memory
561950		aryan12	Broken Device (JOI17_broken_device)	C++17	0 / 100	33 ms	2968 KiB

Anna

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

void Anna(int N, long long X, int K, int P[])
{
    set<int> already_taken;
    for(int i = 0; i < K; i++)
    {
        already_taken.insert(P[i]);
    }
    long long cnt = 0;
    // cout << "X = " << X << "\n";
    for(long long i = 0; i < N / 2; i++)
    {
        long long bit_set = (1LL << cnt) & X;
        // cout << "bit_set = " << bit_set << "\n";
        cnt++;
        if(bit_set == 0 && !already_taken.count(i * 2) && !already_taken.count(i * 2 + 1))
        {
            Set(i * 2, 1);
            Set(i * 2 + 1, 1);
        }
        else if(bit_set != 0 && !already_taken.count(i * 2))
        {
            Set(i * 2, 1);
            Set(i * 2 + 1, 0);
        }
        else if(bit_set != 0 && !already_taken.count(i * 2 + 1))
        {
            Set(i * 2, 0);
            Set(i * 2 + 1, 1);
        }
        else
        {
            cnt--;
            Set(i * 2, 0);
            Set(i * 2 + 1, 0);
        }
    }
}

Bruno

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

long long Bruno(int N, int A[])
{
    // for(long long i = 0; i < N; i++)
    // {
    //     cout << A[i] << " ";
    // }
    // cout << "\n";
    long long ans = 0, cur_bit = 0;
    for(int i = 0; i < N - 1; i += 2)
    {
        if(A[i] == 0 && A[i + 1] == 0)
        {
            continue;
        }
        if(A[i] == 0 || A[i + 1] == 0)
        {
            ans += (1LL << cur_bit);
        }
        cur_bit++;
    }
    // cout << "ans = " << ans << "\n";
    assert(ans % 2 == 0);
    return ans / 2;
}

• Subtask 1: 0 / 100