int main()
{
	int left,monkey,s,n,last;
	scanf("%d %d",&monkey,&left);
	for (last=1;;last++)
	{
	s=last+left;
	n=monkey;
	while (s%(monkey-1)==0)
	{
		s=s*monkey/(monkey-1);
		n=n-1;
		if (n==1)
		{
			printf("%d\n",(s-left)*monkey+left);
			break;
		}
	}
	if (n!=1)
		continue;
	else break;
	}
	return 0;
}
	
