2017年3月9日
UVALive-2926 Japan 【树状数组】
摘要： Description Japan plans to welcome the ACM ICPC World Finals and a lot of roads must be built for the venue. Japan is tall island with N cities on the 阅读全文
posted @ 2017-03-09 18:13 Robin! 阅读(143) 评论(0) 推荐(0) 编辑