input = [("Mary", 27), ("Joe", 30), ("Ruth", 43), ("Bob", 17), ("Jenny", 22)]

youngPeople = []

for (person, age) in input:
    if age < 30:
        youngPeople.append(person)
    else:
        print "HAHA", person, "is too old!"

print "There are", len(youngPeople), "young people"