public dynamic Solve(string[] lines)
{
var numbers = lines[0].Split(',').Select(int.Parse);
var cards = new List <BingoCard>();
for (uint row = 2; row < lines.Length; row++)
{
var cardRows = new int[5][];
for (uint i = 0; i < 5; i++, row++)
{
cardRows[i] = lines[row].Split(" ", StringSplitOptions.RemoveEmptyEntries)
.Select(int.Parse).ToArray();
}
cards.Add(new BingoCard(cardRows));
}
var plays = from play in PlayBingo(cards, numbers)
where play.Winner is not null
select play.Winner.Score() * play.number;
return(plays.First(), plays.Last());
}