Submission #440418

#	Time	Username	Problem	Language	Result	Execution time	Memory
440418		stoyan_malinin	Rack (eJOI19_rack)	C++14	0 / 100	1 ms	204 KiB

rack

#include <iostream>

using namespace std;

long long n, k;

long long getNum(long long pos, int p2, int seqPos)
{
    while(seqPos+(1LL<<(n-1-p2))<=pos)
    {
        seqPos += (1LL<<(n-1-p2));
        p2++;
    }
    if(pos==seqPos) return (1LL<<(p2-1));

    long long nextSeqPos = seqPos+(1LL<<(n-1-p2));
    long long diff = pos - seqPos;

    return getNum(nextSeqPos+diff, p2, seqPos) - (1<<p2);
}

int main()
{
    cin >> n >> k;
    cout << getNum(k, 0, 1) << '\n';
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 60