int main()
{
 int a,b,c,n,k;
 scanf("%d%d",&n,&k);
a=1;
c=1;
b=1;
 while(b<=n)
 {if(a%(n-1)==0)
 {a=(a/(n-1))*n+k;
  b++;
 }
 else
 {c=c+1;
 a=c*(n-1);
 b=1;
 }
 }
 printf("%d\n",a);
 
 

 

 return 0;
}