Monday’s snowball fight, which appeared to be organized by social media content producers, caused a chaotic scene as a large crowd amassed at the popular park to wing snowballs at each other during a winter storm.
// (it isn't always in every impl)
。夫子是该领域的重要参考
Original OSM: ~2.07 billion points, ~2.42 billion edges
cursor[classno] = j;