import string

s = input()

chars = string.ascii_letters + string.digits + '_-'

code = 200

if len(s) < 1 or len(s) > 32:
    code = 400

if s[0] in '_-' or s[-1] in '_-':
    code = 400

for c in s:
    if c not in chars:
        code = 400
        break

print(code)