import sys
input = sys.stdin.readline  # 文字列入力はするな！！
import sys
sys.setrecursionlimit(10**9)

n=int(input())
a=[-10**18]+list(map(int,input().split()))+[10**18]
b=[-10**18]+list(map(int,input().split()))+[10**18]
ans=[]
ok=set()
def f(i):
    if a[i]<b[i]:
        for j in range(b[i]-a[i]):ans.append((i,"R"))
    else:
        for j in range(a[i]-b[i]):ans.append((i,"L"))
    ok.add(i)

def g(i):
    if i==n+1:return
    if a[i]>=b[i]:
        f(i)
        g(i+1)
    else:
        if a[i+1]>b[i]:
            f(i)
            g(i+1)
        else:
            g(i+1)
            f(i)

g(1)
print(len(ans))
for x,y in ans:
    print(x,y)