Recently, announcement speakers in the city sound almost every day when the mountain is about to have a volcanic eruption that could quickly spread to the city and they always warn all citizens to pay attention. Note that when there are signs like the above, everyone must immediately leave the house and run to a shelter. Today, when you and Mingi were eating together, you suddenly heard a loud explosion and you both immediately looked out. window and saw that the volcano had started to erupt and the emergency siren sounded and they both immediately ran away from the house along with the people to a safe shelter and the volcano spread further down the road but you were pushed by the crowd and separated from Mingi and you both started looking for each other in vain