n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
idx = n
l = [0] * n
for i in range(n):
    if a[i] < b[i]:
        l[i] = 1
x = [0]
if l[0] == 1:
    x.append(0)
for i in range(n - 1):
    if l[i] != l[i + 1]:
        x.append(i + 1)
x.append(n)
ans = []
for i in range(len(x) - 1):
    if i % 2 == 0:
        for j in range(x[i], x[i + 1]):
            for k in range(a[j] - b[j]):
               ans.append((j + 1, 'L'))
    else:
        for j in range(x[i + 1] - 1, x[i] - 1, -1):
            for k in range(b[j] - a[j]):
                ans.append((j + 1, 'R'))
print(len(ans))
for row in ans:
    print(*row)