import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
sys.setrecursionlimit(10**7)
yes = lambda :print("yes");Yes = lambda :print("Yes")
no = lambda :print("no");No = lambda :print("No")
inf = 10**16
#######################################################################


n = ni()
a = na()
b = na()
ans = []
for i in range(n):
    if b[i]-a[i]<0:
        for j in range(a[i]-b[i]):
            ans.append((i+1,"L"))


for i in range(n-1,-1,-1):
    if b[i]-a[i]>0:
        for j in range(b[i]-a[i]):
            ans.append((i+1,"R"))

print(len(ans))
for i ,j in ans:
    print(i,j)