import re

def validate_id(ID):
    if len(ID) < 1 or len(ID) > 32:
        return "400"
    if ID[0] == "_" or ID[0] == "-":
        return "400"
    if not re.match("^[A-Za-z0-9_]+$", ID):
        return "400"
    return "200"

ID = str(input("Enter an ID: "))
print(validate_id(ID))