import sys
if sys.platform =='ios':
	import clipboard
	a=clipboard.get()
	a = a.split('\n')
	text = '\n'.join(a)
	with open('input_file.txt','w') as f:
		f.write(text)
	sys.stdin = open('input_file.txt')
	
n = int(input())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
ans = []

for i in range(n):
	if a[i] <= b[i]:
		continue
	for _ in range(a[i]-b[i]):
		ans.append("%d L"%(i+1))
		
for i in range(n-1,-1,-1):
	if a[i] >= b[i]:
		continue
	for _ in range(b[i]-a[i]):
		ans.append("%d R"%(i+1))
		
print(len(ans))
print(*ans,sep="\n")