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#!/usr/bin/env ruby
map = {:onlysanta => Hash.new(0), :robosanta => Hash.new(0)}
map[:onlysanta][[0,0]] += 1
map[:robosanta][[0,0]] += 1
onlysanta = {:northing => 0, :easting => 0}
santa = {:northing => 0, :easting => 0}
robosanta = {:northing => 0, :easting => 0}
input = STDIN.readlines.map(&:chomp).join
input.chars.each_with_index do |ch, idx|
case ch
when '<'
onlysanta[:easting] -= 1
if idx.odd? then
santa[:easting] -= 1
else
robosanta[:easting] -= 1
end
when '>'
onlysanta[:easting] += 1
if idx.odd? then
santa[:easting] += 1
else
robosanta[:easting] += 1
end
when 'v'
onlysanta[:northing] -= 1
if idx.odd? then
santa[:northing] -= 1
else
robosanta[:northing] -= 1
end
when '^'
onlysanta[:northing] += 1
if idx.odd? then
santa[:northing] += 1
else
robosanta[:northing] += 1
end
end
map[:onlysanta][[onlysanta[:easting], onlysanta[:northing]]] += 1
map[:robosanta][[santa[:easting], santa[:northing]]] += 1
map[:robosanta][[robosanta[:easting], robosanta[:northing]]] += 1
end
puts "Santa only: #{map[:onlysanta].length}"
puts "Robosanta: #{map[:robosanta].length}"
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