Cards ← ⊜(⊜(□⊜⋕≠@ .)≠@|.↘+1⊗@:.)≠@\n.&fras"04.in"
Wins ← ≡(/+/+⊐/⊞∊)
N ← ⧻Cards
One ← /+ⁿ:2-1▽>0.
Fold ← ⊃(+1)(+⊙(×⊡):⊙.)⊃∘(⊙(⊡⊙.):)
Two ← /+⊙;;⍥Fold N 0 =.⊃∘≡(↙N°⊚⊂:N++1⊙⇡) ⇡N
⊃One Two Wins Cards