2023年3月20日
PAT 甲级 1013 Battle Over Cities（25）
摘要： It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c 阅读全文
posted @ 2023-03-20 21:15 爱吃虾滑 阅读(13) 评论(0) 推荐(0) 编辑