You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
866 B
36 lines
866 B
ARGF.read.chomp =~ /(\d+) players; last marble is worth (\d+) points/
|
|
num_players = $1.to_i
|
|
num_marbles = $2.to_i
|
|
|
|
circle = []
|
|
marbles = (0...num_marbles).to_a
|
|
|
|
zero = marbles.shift
|
|
circle << zero
|
|
|
|
current_marble_index = 0
|
|
current_player = 0
|
|
scores = Hash.new(0)
|
|
|
|
until marbles.empty?
|
|
current_marble = marbles.shift
|
|
|
|
if current_marble % 23 == 0
|
|
scores[current_player] += current_marble
|
|
index = (current_marble_index - 7) % circle.size
|
|
scores[current_player] += circle.delete_at(index)
|
|
current_marble_index = index
|
|
else
|
|
index = (current_marble_index + 2) % circle.size - 1
|
|
index += 1 unless index == -1
|
|
circle.insert(index, current_marble)
|
|
current_marble_index = index % circle.size
|
|
end
|
|
|
|
# puts "[#{current_player + 1}] #{circle.join(" ")}"
|
|
|
|
current_player = (current_player + 1) % num_players
|
|
end
|
|
|
|
p scores.max_by(&:last)
|