Submission #108483

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Source Code Expand

n = gets.to_i
arr = Array.new(481, false)
n.times do
  s, e = gets.chomp.split("-").map(&:to_i)
  s = (s/100)*60 + (s%100)
  e = (e/100)*60 + (e%100)
  s -= (s % 5)
  e += (5 - (e % 5)) if e % 5 != 0
  s /= 5
  e /= 5
  (s...e).each do |i|
    arr[i] = true
  end
end
flag = arr[0] ? true : false
print "0000-" if flag
(0..480).each do |i|
  if flag.! # ふってない
    if arr[i] # ふりはじめた
      print format("%04d", ((i*5)/60)*100+((i*5)%60)) + "-"
      flag = true
    end
  else # ふってる
    if arr[i].! # やんだ
      puts format("%04d", ((i*5)/60)*100+((i*5)%60))
      flag = false
    end
  end
end
puts 2400 if flag

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