Submission #1249904

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249904		Petrix	Rack (eJOI19_rack)	C++20	100 / 100	4 ms	328 KiB

rack

#include <iostream>
using namespace std;

#define MOD 1000000007

int main()
{
    long long n,k,rasp=0,i;
    cin>>n>>k;k--;
    for(i=1;i<=n;i++){
        rasp=(rasp*2+k%2)%MOD;
        k/=2;
    }
    cout<<(rasp+1)%MOD;
    return 0;
}

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