aoc-2020-d2.tab

d2p1.tab

regex = '([0-9]+)-([0-9]+) ([a-z]): ([a-z]+)',
sum([
  parts = grep(@, regex),
  ct = count(grep(parts[3], parts[2])),
  uint(parts[0]) <= ct && ct <= uint(parts[1])
  : @
])

d2p2.tab

regex = '([0-9]+)-([0-9]+) ([a-z]): ([a-z]+)',
sum([
  parts = grep(@, regex),
  bs = bytes(parts[3]),
  b = bytes(parts[2])[0],
  (b == bs[uint(parts[0])-1]) ^ (b == bs[uint(parts[1])-1])
  : @
])