#!/usr/bin/ruby
# coding: cp932

=begin
ヘディングの不連続をなくす
=end

if RUBY_VERSION >= "1.9.0" then
  STDIN.set_encoding('cp932', Encoding.default_internal)
  STDOUT.set_encoding('cp932', Encoding.default_internal)
end

$options = {
  :mode => :sylphide_N,
}

ARGV.reject!{|arg|
  if arg =~ /--([^=]+)=?/ then
    $options[$1.to_sym] = $'
    true
  else
    false
  end
}

target_index = Integer($options[:index]) rescue {
  :sylphide_N => 7, # Sylphide Nページはindex(7)に真方位
  :GAIA => 9, # GAIAはindex(9)に真方位
}[$options[:mode].to_sym]

rotate_count = 0
values = $stdin.readline.chomp.split(/,/)
heading_previous = values[target_index].to_f
$stdout.puts values.join(',')

$stdin.each{|line|
  values = line.chomp.split(/,/)
  heading_new = values[target_index].to_f + (rotate_count * 360)
  if heading_new - heading_previous < -180 then # 179 => -179(181)
    rotate_count += 1
    heading_new += 360
  elsif heading_new - heading_previous > 180 then # -179 => 179(-181)
    rotate_count -= 1
    heading_new -= 360
  end
  
  values[target_index] = sprintf('%.2f', heading_new)
  $stdout.puts values.join(',')  
  heading_previous = heading_new
}