Submission #1552585

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Source Code Expand

a, b = gets.split

ia = a.index(/[49]/)
aa = a.dup
if ia
  aa[ia] = (aa[ia] == ?4) ? ?3 : ?8
  (ia+1...a.size).each{|i| aa[i] = ?8 }
end

ib = b.index(/[49]/)
bb = b.dup
if ib
  if ib
    (ib+1...b.size).each{|i| bb[i] = ?0 }
    loop{
      if ib < 0
        bb = ?1 + ?0 * b.size
        break
      end
      if bb[ib] == ?4
        bb[ib] = ?5
        break
      elsif bb[ib] == ?9
        bb[ib] = ?0
        ib -= 1
        if ib>=0
          bb[ib] = bb[ib].tr("01235678", "12346789")
        end
      else
        break
      end
    }
  end
end

ad = aa.to_i
bd = bb.to_i
ao = aa.tr("5678", "4567").to_i(8)
bo = bb.tr("5678", "4567").to_i(8)

a_fix = (a != aa) ? (a.to_i - aa.to_i - 1) : 0
b_fix = (b != bb) ? (bb.to_i - b.to_i - 1) : 0

#p ad, bd, ao, bo, a_fix, b_fix

base_width = bd - ad
ok_width = bo - ao
p base_width - ok_width - a_fix - b_fix

Submission Info

Judge Result