Given the following pseudo-code implementing a behavioral pattern, what is the output?

Given the following pseudo-code implementing a behavioral pattern, what is the output?

class Publisher:
    def __init__(self):
        self.subscribers = []
    def subscribe(self, sub):
        self.subscribers.append(sub)
    def notify(self, msg):
        for sub in self.subscribers:
            sub.update(msg)

class Subscriber:
    def __init__(self, name):
        self.name = name
    def update(self, msg):
        print(f"{self.name} received {msg}")

p = Publisher()
s1 = Subscriber("A")
s2 = Subscriber("B")
p.subscribe(s1)
p.subscribe(s2)
p.notify("Hello")