N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

ans = []
for i in range(N):
  a = A[i]
  b = B[i]
  if b < a:
    for n in range(a - b):
      ans.append([i + 1, "L"])
for i in range(N - 1, -1, -1):
  a = A[i]
  b = B[i]
  if a < b:
    for n in range(b - a):
      ans.append([i + 1, "R"])

print(len(ans))
for a, b in ans:
  print(a, b)