Logical Operation Help

[kvusal]

Dear Dynamo Experts,
Can someone help me to do logical operation shown below. As an brief description:
I want to prepare script to flatten L3 list to L2 list while only taking just first value of value located at L1. Please see attached photo:

Logical Operation.dyn (1.3 KB)

[m.rijsmus]

@kvusal

[Jonathan.Olesen]

Alternative to the suggestion by @m.rijsmus you can use longest lacing instead of list levels There is not a difference in performance to my knowledge

[kvusal]

Wow. Many Thanks Dears. Great Solution.