~ [❤️ 🔪 🛡️]       # Entity
T ← ⌈÷↥1˜-⊓🔪⊃🛡️❤️ # NTurns ? Attacker Defender
W ← ≥⊃˜T T        # Win ? Boss You

Ns ← ⊜⍣⋕0⊸≠@          # parse each word as a number
PS ← □↘₁⊜(↙₋₃Ns)⊸≠@\n # parse shop section

°□₃⊜PS=₀⊸⦷"\n\n"&fras"i/21shop.in" # Weapons Armour Rings ?
♭₂⊞(++)⊓(∘|⊂0|♭₂˙⊞+⊂0)             # Builds ? Weapons Armor Rings 
⧋⊃⍜⊢⋅100⊢                          # PlayerEnts Costs ? Builds
&rl(⊣Ns)&fo"i/21.in"               # BossEnt ?
∩°□°⊟⇌⊕□≡⌞W                        # WinCosts LossCosts ? BossEnt PlayerEnts Costs
⊓/↧/↥

~/aoc15ua/21