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class Replica:
    def __init__(self):
        self.state = {}

    def replicate(self, primary_state):
        # Sync up to the primary's current state.
        self.state = dict(primary_state)


class Primary:
    def __init__(self):
        self.state = {"profile": "Alice"}    # initial


primary = Primary()
replica = Replica()
replica.replicate(primary.state)             # initial sync

# User updates profile on the primary.
primary.state["profile"] = "Alicia"

# Read 1 — went to the lagging replica BEFORE it caught up.
print(replica.state.get("profile"))

# Read 2 — routed to primary (read-your-own-writes pattern).
print(primary.state.get("profile"))

# Replica eventually catches up.
replica.replicate(primary.state)

# Read 3 — same replica, now post-sync.
print(replica.state.get("profile"))

# What does this print? Type your prediction.

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