弱到没救了
3.22
1443: [JSOI2009]游戏Game：比较有意思的题目呢。题解很多，就不讲了。
3.24
2437: [Noi2011]兔兔与蛋蛋：我居然会匈牙利了。。
2442: [Usaco2011 Open]修剪草坪：化一下式子就是单调队列
2447: 消防站：把树的双中心贴过来WA+TLE，果然随机乱搞还是不行。。可标算不就是调整嘛。。
2770: YY的Treap：l->key到r->key区间的priority最小值，懒得离线，splay完事
2984: [Balkan2009]strip：[tex]O(n^2)[/tex]暴力就行
3064: Tyvj 1518 CPU监控：曾经欲仙欲死写不出历史标记。。直到发现cover标记和add标记是可以一起记在cover上的。。
2724: [Violet 6]蒲公英：陈题了，看到就码了，维护第L到R块的信息，以及向两边拓展S可能对答案造成改变的值的信息，每次拓展暴力即可。
2836: 魔法树：。。。此题用getchar读入会RE
2653: middle：陈题+好题，DZY有详细题解。。感觉挺好懂的。。
2986: Non-Squarefree Numbers：膜题解，二分容斥啊。。。。我好弱啊我居然想不到。。
3024: [Balkan2012]balls：这么裸的斜率优化已经不可能见到了。
upd 3.25
3256: 基因序列相似性问题：[tex]O(n^2)[/tex]的dp加上一维表示匹配模式串到第几位，用kmp优化这个匹配就可轻松做到[tex]O(n^3)[/tex]了
2987: Earthquake：一直不会类欧几里德。。其实挺好懂的。。一切黑科技都是纸老虎（大雾
3896: 求和：EXT一下出了个[tex]O(n\log n)[/tex]到模拟赛成功狙击Stilwell。。感觉挺过意不去的。。思路的话就是伯努利数推一推就可以做到了，快速求伯努利数只要生成函数泰勒展开一下多项式求逆就可以做到
3907: 网格：此题难点在于高精不解释
2258: pku2758 Checking the Text 文本校对：本来想用SA做练练手的。。发现实在是太。。。。还是写了hash，还有发现自己理解SA了。。模版背背实在有点笨，倍增明明是这么简单的东西。。
upd 3.27
3426: Poi2013 Tower Defense Game：没被保护就建，正确性很好证明：一个节点没被保护，那他原来一定被一个相邻的防御塔保护或自己就有防御塔，那现在造一个新式防御塔一定可以完全覆盖原来的防御塔保护范围。其实难点在于维护一个点有没有被保护。。一开始写了个dfs，自以为是对的。。发现有环。。写了个bfs，自以为是对的。。发现可能会更新dist=2的点。。最后类似meet in middle才过。。
upd 3.28
3914: Jabby's shadows：水题红色预警！只要这么LCT搞一下（比划），然后这么搞一下（比划），就好辣！是不是非常清晰明了呢！详细题解等我有空再说吧~，其实还有个EXT我没有解决，其实也就是没时间去想啦。
2738: 矩阵乘法：全局二分+二维bit。写完狂T不止无比舒爽，发邮件给BZOJ管理员要数据，然后管理员回我“可能是MLE”。。然后。。就没了？。。Orz。。然后就发现全局二分写成递归形式可以有特殊的卡常方式。。只能Orz了。。
2824: [AHOI2012]铁盘整理：A*
3912: Jabby's maze：神题红色预警！模拟赛的时候暴力打完就弃疗啦。。这么神的题我怎么会呢，显然是暴力搞过的对不对>.<
Fri, 26 Aug 2022 00:11:00 +0800
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