import strutils
import sequtils
import bigints # type: BigInt

# let x = initBigInt("810896098877923596128062174904361421866219158")

let file_path = "./data/stripped"

proc startsWithSubsequence(xs: seq[string], ys: seq[string]): bool = 
  if xs.len == 0:
    return true
  elif ys.len == 0:
    return false
  elif xs[0] == ys[0]:
    return startsWithSubsequence(xs[1..<xs.len], ys[1..<ys.len])
  else:
    return false

let f = open(file_path)
var line : string

var i = 0
var start = @["1", "2", "3"]
var seqs: seq[seq[string]]
while f.read_line(line):
  if i > 3:
    let seq = split(line, ",")
    let l = seq.len
    let nums = seq[1..(l-2)] # .map(proc (x: string): BigInt = initBigInt(x))
    if startsWithSubsequence(start, nums):
      seqs.add(nums)
  i = i + 1
f.close()

echo seqs