EC-Final 2022 Rectangles 有点营养的题。 很容易做三条竖线,接下来考虑两竖一横。直接枚举横线会变成支持加入区间删除区间维护有多少种方案选择两个点使得任何区间至少包含其一。当然一个想法是线段树分治,以一只 log 的代价转化为只有加入,这个先放着。胡乱离散化一下,又可以转化为点带权但值域只有2n。当然这样会...
1≤s≤n≤5×103,−109≤wi≤109,0≤pi≤109,1≤ai≤n,ai≠i。 很炫酷的题。 整个图的结构是基环树。不妨假设s在环上,考虑变换,一定是环上连续一段0一段1变换,然后随着环上01变换,每次染到环上某个点时都可以往子树内然一段,于是子树里也会变成01分层的情况。 子树里如果01分成了最多k次,那么...
ICPC EC Final 2022 游记 目录 显示 Day -1 想着早点到上海,留出点时间随机游走,于是订了足够早出发(十点整)的 G7 次的车票。结果就是不得不八点多出门赶车。 运气不太好,没赶上早高峰房山线跨线进 9 号线的车,换乘次数 +1。 到北京南站的时候离开车差不多半个小时,过了安检上楼之后刚好赶上开始...
The 11th Stage of the 1st Universal Cup is coming. It will be held from April 8th to 9th. It is also a replay of the 2022 ICPC East Continent Final Contest, which was held on March 24, 2023 — March 26, 2023. As usual, we have three time windows for participating. You can ...
Hello Codeforces! The 11th Stage of the 1st Universal Cup is coming. It will be held from April 8th to 9th. It is also a replay for the 2022 ICPC East Continent Final Contest, which was held on March 24, 2023 — March 26, 2023. ...
经过5个小时的激烈角逐,计算机与信息科学学院 软件学院由陈雯丽、何一、徐畅同学组成的“西南大学啦啦队”队,在教练王智老师的指导下斩获银牌,这也是我校在EC-Final总决赛中取得的首枚奖牌。 ACM 训练队在学院的指导下,以培养高素质高...
(VSC) topologies and the unique features of current-source converter approaches – today solely employed in thyristor-based high-power medium-voltage motor drives - and AC/AC matrix converter concepts over state-of-the-art ...
大概是赛前一个月，我得知本次 EC Final 还会办一场华为挑战赛。不过我发现 DOMJudge 并不能支持华为...
ec-final也是程序写出bug导致L卡题+码力不够过不了H大模拟导致遗憾离场。唯一有点开心的是拿了A一血...