Yes, it was great. 

Our final leaderboard.

And our race on the graph.

(& and !) can be used almost everywhere, but not recommended because both operands will be calculated. And sometimes it can cause some unexpected behaviour. Look at my example

USER>set a=1 if a!$i(a) zw a
a=2

even when the first expression already truth second one also calculated and increased the value

USER>set a=1 if a||$i(a) zw a
a=1

In this case, the first expression already truthy, and in OR condition it's enough to make full logical expression truthy as well, and not need to calculate the second expression.

Do you mean pattern matching operator `?` ?

In the documentation, you can find some examples.

This pictures hosted somewhere on internal InterSystems server (confluence.iscinternal.com), and you can see while you have access to this server, but we don't have.

My best day was a few days ago, but still very slow.

Day       Time  Rank  Score       Time  Rank  Score
 12   00:09:34   243      0   00:18:42   378      0

I'm usually much slower than you guys. Looks like you have more experience solving such tasks than me, you already solved both previous years.

Just got my VR headset. It is quite good, but unfortunately, it does not have an action button. So, it becomes difficult to interact with applications when your phone inside.

Looks like there is some error with autodetecting links in a post here, just fixed it with manually marking correctly as a link in his comment.

That's why it's an article and not a question.

So, for now, yes. I changed to article

In the first implementation, I tried to actually build the tree. But missed something, and got some duplications in the lowest branches. Then using the same tree trying to solve second part, I found more than one unbalanced branches and a long time had not noticed how it could be until I noticed duplications. Then I removed this way, and first part becomes much simpler if just search node which does not have parents. In the second part, you actually already have a tree when you know when it started from the first part.

For current process

USER>f fmt="enuw","rusw","current","" do ##class(%SYS.NLS.Format).%New(fmt) w !,fmt,?10,$zd($h,11),?15,$zd($h,12)
 
enuw      Wed  Wednesday
rusw      Сре  Среда
current   St   středa
          Wed  Wednesday

Or for all new processes, without restart

%SYS>write $zd($h,12)
Wednesday
%SYS>Set ^SYS("NLS","Config","LocaleFormat")=1
 
%SYS>write $zd($h,12)
Wednesday
%SYS>Do Locale^NLSLOAD("rusw")
 
%SYS>write $zd($h,12)
Среда

Looks like we in the same timezone, and you solve tasks faster than me. When your time today was 15:47 minutes for the first task. But on the main Leaderboard fastest time 2:58. I really don't understand how it would be possible, to solve it so fast.

anagram used all letters, so I just compared lengths of strings and used $tr() to remove all characters from string one in another.

So, your code I would change like 

ClassMethod IsAnagram(word,test) as %Boolean {

  if $L(word)'=$L(test) return 0

  return $tr(word,test)=""

}

My solutions will be here

Our team is growing  

Join our leaderboard, too. ))

 set input="1212"
 set len=$l(input)/2
 set sum=0
 f i=1:1:len {
   if $e(input,i)=$e(input,len+i),$i(sum, i*2)
 }
 zw sum

I also started from $zstrip,  but in task 1111 should produce 1, when $zstrip returns only one 1.

for the second task, you should simply compare values from the first half of string with the same position from the second half. 

ClassMethod HelloWorld(Name As %String)
{
  set result = {
    "name": (Name)
  }
  quit result.%ToJSON()
}