N=int(input())
A=list(map(int, input().split()))
B=list(map(int, input().split()))
res=[]
for i in range(N):
    a,b=A[i],B[i]
    if a>b:
        for _ in range(a-b):
            res.append((i+1,"L"))
        A[i]=B[i]
for i in range(N)[::-1]:
    a,b=A[i],B[i]
    if a<b:
        for _ in range(b-a):
            res.append((i+1,"R"))
        A[i]=B[i]
print(len(res))
for k,c in res:
    print(k,c)