Scrapes the list of contestants in Portugal from the Google Code Jam 2013 Qualification Round

codejam.rb

require 'open-uri'
require 'json'

MAXPOS = 21261
STEP = 20


def getUrl(pos)
  "http://code.google.com/codejam/contest/2270488/scoreboard/do/?cmd=GetScoreboard&start_pos=#{pos}"
end


contestants = (1..MAXPOS).step(STEP).flat_map do |i|
  $stderr.puts "Reading page #{i}"
  open(getUrl(i)) do |f|
    json = JSON.parse(f.read)
    json['rows'].find_all {|row| row['c'] == 'Portugal'}
  end
end


contestants.each do |c|
  puts "#{c['r']}  #{c['n']}"
end