N = int(input())
A = tuple(map(int, input().split()))
B = tuple(map(int, input().split()))


ans = []
def move(i):
    x, y = A[i], B[i]
    if x < y:
        for _ in range(y - x):
            ans.append((i + 1, 'R'))
    elif x > y:
        for _ in range(x - y):
            ans.append((i + 1, 'L'))

stk = []
for i, (a, b) in enumerate(zip(A, B)):
    if a < b:
        stk.append(i)
    elif a > b:
        while stk:
            j = stk.pop()
            move(j)
        move(i)
while stk:
    j = stk.pop()
    move(j)

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