1 2 3 4 5 6
⎕IO←0 CountEqualDivisible←{+/,(∘.=⍨⍵)∧(∘.(0=⍺|×)∧∘.<)⍨⍳≢⍵} ⎕←2 CountEqualDivisible 3 1 2 2 2 1 3 ⎕←1 CountEqualDivisible 1 2 3