print(
	(
		lambda l: (
			max(l),
			*(
				a+1 
				for a, b in zip(l[:-1], l[1:])
				if a == b-2
			)
		)
	)
	(
		sorted(
			[
				int(line.translate(str.maketrans("FBLR","0101")),2)
				for line in open("input.txt")
			]
		)
	)
)