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.
21 lines
549 B
21 lines
549 B
8 years ago
|
Disc = Struct.new(:positions, :start_position) do
|
||
|
|
def position_at(time)
|
||
|
|
(start_position + time) % positions
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
discs = DATA.each_line.map {|line|
|
||
|
|
/Disc #\d has (?<positions>\d+) positions; at time=0, it is at position (?<position>\d+)./ =~ line
|
||
|
|
Disc.new(positions.to_i, position.to_i)
|
||
|
|
}
|
||
|
|
|
||
|
|
p (0..Float::INFINITY).find {|t|
|
||
|
|
discs.each.with_index.all? {|disc, index|
|
||
|
|
disc.position_at(t + index) == 0
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
__END__
|
||
|
|
Disc #1 has 5 positions; at time=0, it is at position 4.
|
||
|
|
Disc #2 has 2 positions; at time=0, it is at position 1.
|