N = gets.to_i
A = gets.split(" ").map{|s| s.to_i}
B = gets.split(" ").map{|s| s.to_i}

q = []
c = Array.new((A+B).max, false)
0.upto(N-1) {|i|
	a, b = A[i], B[i]
	c[a-1] = true
	q << [i+1, a-1, b-a] if a != b
}

ans = []

while q.length > 0 do
	i, pos, diff = q.shift
	d = diff > 0 ? 1 : -1
	if c[pos+d] then
		q << [i, pos, diff]
	else
		c[pos] = false
		while diff != 0 and (not c[pos+d]) do
			diff -= d
			pos += d
			ans << [i, d > 0 ? "R" : "L"]
		end
		c[pos] = true
		q << [i, pos, diff] if diff != 0
	end
end

puts ans.length
ans.each {|i, d|
	puts "#{i} #{d}"
}