Submission #988862

#	Time	Username	Problem	Language	Result	Execution time	Memory
988862		user736482	Rack (eJOI19_rack)	C++17	100 / 100	4 ms	604 KiB

rack

#include <bits/stdc++.h>
using namespace std;
long long a,b,c;
int main()
{
    cin>>a>>b;
    b--;
    while(a!=0){
        a--;
        c=c*2%1000000007;
        c+=b%2;
        b/=2;
    }
    cout<<c+1;
    return 0;
}

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