data = {}

def create(username: str, stardust: int, nextCost: int):
    data[username] = (stardust, nextCost)

def read(username: str):
    return data[username]

def check(username: str):
    return username in data

def update(username: str, stardust: int, nextCost: int):
    data[username] = (stardust, nextCost)

def smartread(username: str, stardust: int, nextCost: int):
    if username not in data:
        create(username, stardust, nextCost)
    return data[username]