import sys

for line in sys.stdin:
	input_start = list(line.rstrip().split(' '))
	input_start[0] = int(input_start[0])
	
	if input_start[1] == 'K':
		if input_start[0] == 1:
			print(1)
			continue
		else:
			print(4)
			continue

	elif input_start[1] == 'N':
		if input_start[0] <= 2:
			print(1)
		else:
			print(2)
	elif input_start[1] == 'B':
		print(input_start[0])
	else:
		print(input_start[0])