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# Day 4: Camp Cleanup
import std/[os, strutils, sequtils, sugar]
let input = paramStr(1).readFile().strip().split("\n")
let assign = input.mapIt(it.split(","))
.mapIt(it.mapIt(it.split("-").map(parseInt)))
func contains(a, b: seq[int]): bool =
return a[0] in b[0] .. b[1] and
a[1] in b[0] .. b[1] or
b[0] in a[0] .. a[1] and
b[1] in a[0] .. a[1]
echo assign.filterIt(contains(it[0], it[1])).len
func overlaps(a, b: seq[int]): bool =
return a[0] in b[0] .. b[1] or
a[1] in b[0] .. b[1] or
b[0] in a[0] .. a[1] or
b[1] in a[0] .. a[1]
echo assign.filterIt(overlaps(it[0], it[1])).len
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