제출 #440420

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
440420		stoyan_malinin	Rack (eJOI19_rack)	C++14	0 / 100	1084 ms	204 KiB

rack

#include <iostream>

using namespace std;

long long n, k;

long long getNum(long long pos, int p2, long long 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) - (1LL<<p2);
}

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

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