2017年10月25日
HDU - 4027 Can you answer these queries?(线段树区间更新，区间查询）
摘要： A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate t... 阅读全文
posted @ 2017-10-25 21:46 _大美 阅读(131) 评论(0) 推荐(0) 编辑