N = int(input())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
ans = []
for i in range(N):
    if B[i] < A[i]:
        dif = A[i] - B[i] 
        ans += [[i+1,"L"] for _ in range(dif)]
for i in reversed(range(N)):
    if B[i] > A[i]:
        dif = B[i] - A[i] 
        ans += [[i+1,"R"] for _ in range(dif)]
print(len(ans))
for a in ans:
    print(*a)