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  • 新闻

    INM season 2 ended!!!

    INM has ended!!!!! Oh, what a season! Although this season's very short, we did pretty many things and seems it's better than INM season 1. Thanks to all member's efforts! What we did: super slow exp machine super slow slime farm not so slow iron ……
    HDD 2019-08-31
  • 技术

    [艾志康]基础积分常用公式[持续更新]

    $1.\int{\frac{1}{\sqrt{x^2±a^2}}}dx=ln|x+\sqrt{x^2+a^2}|+C(a>0)$ $1.5.特别地, \int{\frac{1}{\sqrt{x(x+a)}}}dx=ln(\sqrt{x}+\sqrt{x+a})+C(a>0)$ $2.\int{tan^2(x)}dx=tanx-x+C$ $3.\int{\frac{1}{x^2+a^2}}dx=\frac{arctan{(\frac{x}{a})}}{a}+C$ $4.\int{\fra……
    HDD 2019-08-31
  • 题&解

    Green Boy Can't You Solve It Out?

    2 problems for div3 participants Bomb Defusing II Statement Find how many years in range [l,r] that it has Sept.1 as a weekend(Sunday and Saturday)? Example l=2017,r=2019 out=2 2018/9/1 is Saturday while 2019/9/1 is Sunday Constriants (Div2A-Div2B)……
    XGN 2019-08-31
  • OBCYSIO

    Orange Boy Can You Solve It Out? Ep. 21.8

    思考题 within 5 min Bomb defusing 「Readers, please set up a 5-minute timer before you continue to read」 Green boy envied Orange Boy for having such a high rating. So he decided to send Orange Boy a present: a bomb! The bomb will explode in 5 minu……
    XGN 2019-08-28
  • OBCYSIO

    Orange Boy Can You Solve It Out? Ep.21.5

    APPROXIMATE PROBLEM WARNING Metro There are N metro stations in a city. The distance between each two station is a fixed integer x. Your task is to construct some metro lines across the stations. We define a cost from station A to station B as the ……
    XGN 2019-08-25
  • OBCYSIO

    Orange Boy Can You Solve It Out? Ep.21

    思考题 for bread Bread Story You have a piece of bread which can be seen as a N*M grid. You also have a bottle of jam. You want to put some jam on the bread to make the bread delicious. You can do the following two operations: Put 1 unit of jam on……
    XGN 2019-08-24
  • 新闻

    Forge Server Season1 Ended

    You can see the mod list here : modlist You can download the server pack here You can download the client pack here
    carott 2019-08-23
  • 日记

    [搬运]zky越来越菜了呢

    XIZCM今天上课的时候叫我填个坑,我想如果以后高一要停课可以给个集训经验参考,就同意转载一下 以下两篇都是我之前写的blog 2019: zhengruioi 2019金华峰会游记 马上模拟赛开始了,zhengruioi.com 用起来了,这篇blog应该会被翻出来吧 我是跳跳 序: 今年是我第二年……
    ZhukyRLG 2019-08-23
  • 新闻

    THHHS Beta 2 Release

    Added two extra stages, download and information at: 東方地獄洞文档(Touhou: Shining Heroes In Deep Dark Hole) screenshot:
    XGN 2019-08-22
  • OBCYSIO

    Orange Boy Can You Solve It Out? Ep.20.5

    APPROXIMATE PROBLEM WARNING Graph There is a grid of size N*M. Each grid could be "#" or ".". You need to find the shortest path from (1,1) to (N,M) by walking on "." only. But you are NOT given the graph. You can only see the grids near you. That ……
    XGN 2019-08-20