2018年10月17日
洛谷P3066 [USACO12DEC]逃跑的Barn (线段树合并)
摘要： 题目描述It's milking time at Farmer John's farm, but the cows have all run away! Farmer John needs to round them all up, and needs your help in the search 阅读全文
posted @ 2018-10-17 19:36 Styx-ferryman 阅读(214) 评论(0) 推荐(0) 编辑