#include <iostream>
#include <cstdio>
#include <iomanip>
#include <cmath>
#include <algorithm>
#include <cstring>
#include <string>
#include <stack>
#include <queue>
#define LL long long
using namespace std;
const int INF = 0x3f3f3f3f;
const int N = 1e5 + 10;
long long k , n;
long long sum (int n , int m)
{
	if(m == 0)
	{
		return 1;
	}
	return n * sum(n , m - 1);
}
int main()
{
	cin >> n >> k;
	int a[32];
	int len = 0;
	while( k )
	{
		a[len++] = k % 2;
		k /= 2;
	}
	len--;
	long long num = 0;
	for(int i = 0; i <= len; i++)
	{
		if(a[i])
		{
			num += sum(n , i); 
		}
	}
	cout << num << endl;
	return 0;
}