Submission #110400

---

Source Code Expand

def roundBefore(time)
  if time % 10 < 5 then
  	time - (time % 10)
  else
		time - (time % 10) + 5
  end
end

def roundAfter(time)
  if time % 10 == 0 then
  	time
  elsif time % 10 < 5 then
		time - (time % 10) + 5
  else
		time - (time % 10) + 10
  end
end

data = Array.new
$stdin.gets.to_i.times{
  tmp = $stdin.gets.chomp.split("-").map(&:to_i)
  data << [roundBefore(tmp[0]), roundAfter(tmp[1])]
}
data.sort!

record = Array.new(2405)
data.each{|r|
	startTime = r[0]
	endTime = r[1]
	startTime.step(endTime, 1){|t| record[t] = true }
}

rained = false
startTime = nil
endTime = data[data.size - 1][1]
(start = data[0][0]).step(endTime + 5, 5){|t|
	#降り始め
	if !rained && record[t] then
		rained = true
		startTime = t
		printf "%04d", startTime
	#雨やんだ
	elsif rained && !record[t]
		rained = false
		printf "-%04d\n", t - 5
	end
}

Submission Info

Judge Result