Submission #779519

#	Time	Username	Problem	Language	Result	Execution time	Memory
779519		vmanz	Rack (eJOI19_rack)	C++14	40 / 100	0 ms	212 KiB

rack

#include <iostream>

using namespace std;

const int MOD = 1e9 + 7;

int main()
{
    int n;
    long long k;
    cin >> n >> k;
    long long p = 1LL << (n - 1);
    long long rez = 1;
    k--;
    while (k != 0)
    {
        if (k % 2 != 0)
        {
            rez += p;
            rez %= MOD;
        }
        p /= 2;
        k /= 2;
    }
    cout << rez;
    return 0;
}

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