2017年4月6日
POJ-1364 King 【差分约束】
摘要： Description Once, in one kingdom, there was a queen and that queen was expecting a baby. The queen prayed: ``If my child was a son and if only he was 阅读全文
posted @ 2017-04-06 22:19 Robin! 阅读(190) 评论(0) 推荐(0) 编辑