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The Preliminary Contest for ICPC Asia Nanjing 2019 A. The beautiful values of the palace (扫描线)
网络赛真是能把我这种蒟蒻做到自闭。。写了几道属于我这种水平的难题均转载自一起打比赛的聚聚同学：SDUWH_2U传送门：https://nanti.jisuanke.com/t/41298DescriptionHere is a square matrix of n∗nn * nn∗n, each lattice has its value (nn must be odd), and th...转载 2019-09-17 22:03:01 · 147 阅读 · 0 评论 -
The Preliminary Contest for ICPC Asia Shanghai 2019 B. Light bulbs（卡了线段树空间的思维题）
传送门：https://nanti.jisuanke.com/t/41399题目描述There are $N￥ light bulbs indexed from 000 to N−1N−1N−1. Initially, all of them are off.A FLIPFLIPFLIP operation switches the state of a contiguous subset ...转载 2019-09-20 17:42:28 · 162 阅读 · 0 评论