$ Time:      7  15   30
$ Distance:  9  40  200
TestInput ←

Quadratic ← ⊃+-⊃(⍜°√+|∘)⊃(¯÷×2|¯÷⊙⋅∘)

Solve ← -1-:⊓⌈⌊ Quadratic ¯1 ⊙¯
PartI ← /× Solve ≡°⊟ ⍉⊜(⊜⋕≠@ .↘9)≠@\n.
PartII ← Solve °⊟ ⍉⊜(⋕▽≠@ .↘9)≠@\n.

PartI TestInput
PartII TestInput

PartI &fras "day06.in"
PartII &fras "day06.in"