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...
三个人搞到294分钟才签完签到题，另一队友说不如等到299分钟交拿顽强拼搏奖。
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...
为了简洁处理,又加了区间端点互不相同的限制。晚上躺在床上的时候,思维随机发散,想到了独立集。但当时有点太发散了,意识到是独立集之后也没会做,有点纠结独立集结论的正确性。第二天起床,立马意识到了这是一张二分图,又简单证了一下独立集的结论,就投给杜老师了。 其实后面还出了一个题,我自己感觉非常深刻...
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 ...
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. As usual, we have three time windows for participating. You can ...
UEFA.com lists the starting XIs for both the UEFA Champions League semi-final second legs. Manchester City's Kevin De Bruyne trains on Tuesday Getty Images UEFA.com gives Fantasy Football managers a helping hand by listing and predicting all the UEFA Champions Lea...
Lionel Messi (2nd L) of Argentina vies with Jorginho (2nd R) of Italy during the Finalissima 2022 match between Italy and Argentina in London, Britain, June 1, 2022. (Photo by Pablo Morano/Xinhua) Lautaro Martinez (Front) of Argentina controls the ball during the Finalissima 2022 match ...
DOHA, April 1 (Xinhua) -- The Final Draw for the 2022 FIFA World Cup Qatar was held here on Friday. Following are the results with seeds in the first spot in each group: Group A: Qatar, Ecuador, Senegal, Netherlands; Group B: England, Iran, the United States, European Playoff winner...