import sys

while True:
	try:	
		line = sys.stdin.readline()
		if not line:
			break
		S, letter = line.rstrip().split()
		S = int(S)
		if letter == "R":
			print(S)
		elif letter == "B":
			print(S)
		elif letter == "N":
			if S <= 2:
				print(1)
			else:
				print(2)
		elif letter == "K":
			if S == 1:
				print(1)
			else:
				print(4)

	except EOFError:
		break

exit()