def total_journey_time():
t = Train("Express One", 50, 100)
c1 = City("City 1", 0, 3, 300)
j = Journey(t, [c1], 200)
print(j.total_journey_time()) #,300)
t = Train("Express One", 50, 10)
c1 = City("City 1", 0, 3, 300)
c2 = City("City 2", 0, 3003, 300)
j = Journey(t, [c1, c2], 200)
print(j.total_journey_time()) #,900)
