from collections import deque

N = int(input())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
A.sort()
B.sort()
l = []

for i in range(N):
  l.append((A[i],B[i],i+1))

ans_list = []
que = deque([])

for i in range(N):
  a,b,n = l[i]
  if a < b:
    que.appendleft((a,b,n))
  else:
    for _ in range(abs(a-b)):
      ans_list.append((n,'L'))

for a,b,n in que:
  for _ in range(abs(a-b)):
      ans_list.append((n,'R'))

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