N = int(input())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
ans = []
left = 0
while left < N:
    right = left
    while right < N and A[right] < B[right]:
        right += 1
    for i in reversed(range(left,right)):
        for j in range(A[i],B[i]):
            ans.append((j,"R"))
    if right < N:
        for j in range(A[right],B[right],-1):
            ans.append((j,"L"))
    left = right
print(len(ans))
for k,c in ans:
    print(k,c)