n = gets.strip.to_i
x1,y1,x2,y2 = gets.strip.split(' ').map(&:to_i)

@mvs = %w(UL UR R LR LL L)

def getmoves(a,b,n)  
  [[a - 2,b-1], [a-2, b + 1], [a, b + 2], [a+2, b+1],[a+2,b-1],[a,b-2]].zip(@mvs).select{|(a,b),mv| a >= 0 && b >= 0 && a < n && b < n}
end

@cue = Queue.new
#@cue.push nil
@cue.push [[x1,y1],'']

@thecash = {}
@thecash[[x1,y1]] = true

10000000.times do
  break if @cue.size < 1
  vll = @cue.pop
  mv,str = vll
  x1,y1 = mv
  if x1 == x2 && y1 == y2
    puts str.split(' ').count
    puts str.strip
    exit
  end
  break if !mv
  mvs = getmoves(x1,y1,n)
  mvs.each do |onemove,curstr|
    if !@thecash[onemove]
      @cue.push [onemove, str + ' ' + curstr]
      @thecash[onemove] = true
    end
  end
end
puts 'Impossible'