1  &fras ⊣ &args
 2  
 3  ⊜∘⊸≠@\n
 4  
 5  Step ← (
 6    [⍜°⊟⊸+ ⟜⍜⊣(⇌⍜⊣¯) ⟜⍜⊣(⍜⊣¯⇌)]
 7    ∩↘⟜:=@#⊡⊙⤙⊙⊙◌⊢⊢, [1 .1000]
 8  )
 9  
10  ⊟⊙0_1⊢⊚⊸=@S
11  ⧻◴⊢⤸1/◇⊂ path(Step|=@E⊡⊢)