charset = '1234567890qwertyuiopasdfghjklzxcvbnm_-'

s = input().strip()

if not 1<=len(s)<=32:
	print(400)
	exit(0)
	
if s[0] in '-_' or s[-1] in '-_':
	print(400)
	exit(0)
	
for i in s:
	if i.lower() not in charset:
		print(400)
		exit(0)
print(200)