import string

allowed = set(string.ascii_letters + string.digits + "_-")

id = input()

result = 200

a = {"_", "-"}

length = len(id)
if length >= 1 or length <= 32:
	if id[0] not in a and id[-1] not in a:
		if any(c not in allowed for c in id):
			result = 400
	else:
		result = 400
	
else:
	result = 400

print(result)