N = int(input())
A = list(map(int, input().split())) + [10 ** 9]
B = list(map(int, input().split()))


stack = []
ans = []
for i in range(N):
    now_pos = A[i]
    to_pos = B[i]
    move = abs(now_pos - to_pos)
    if A[i + 1] > to_pos:
        if now_pos < to_pos:
            direction = "R"
        else:
            direction = "L"
        for _ in range(move):
            ans.append((i + 1, direction))

        while stack:
            ind, move = stack.pop()
            for _ in range(move):
                ans.append((ind + 1, "R"))
    else:
        stack.append((i, move))

print(len(ans))
for row in ans:
    print(*row)