虽然是 ABC,质量、难度还是不错的(考场上没想到)。
AHOI2022 钥匙
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Symbols count in article: 5.7k Reading time ≈ 12 mins.
Symbols count in article: 5.7k Reading time ≈ 12 mins.
码量题,vp 时差点写吐了(当然也和我选的方法不够简洁有关),没调出来。
AHOI2022 排列
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Symbols count in article: 2.5k Reading time ≈ 5 mins.
Symbols count in article: 2.5k Reading time ≈ 5 mins.
有趣的数论题目,似乎说不上用了什么高级知识。
ZJOI2022 树
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Symbols count in article: 1.1k Reading time ≈ 2 mins.
Symbols count in article: 1.1k Reading time ≈ 2 mins.
经典的数数题,实在是做不来。
ZJOI2022 众数
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Symbols count in article: 3.3k Reading time ≈ 7 mins.
Symbols count in article: 3.3k Reading time ≈ 7 mins.
非常厉害的 分块 / 平衡规划 题目,不卡常,码量小,比较有趣。
2022 联合省选半退役记
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Symbols count in article: 1.8k Reading time ≈ 4 mins.
Symbols count in article: 1.8k Reading time ≈ 4 mins.
打的很臭,暂且是以一种轻松的心态写这篇游记吧。
集合幂级数浅谈
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Symbols count in article: 5.3k Reading time ≈ 12 mins.
Symbols count in article: 5.3k Reading time ≈ 12 mins.
有点重要的知识点,不记得省选考不考了。
CF643G
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Symbols count in article: 1.8k Reading time ≈ 4 mins.
Symbols count in article: 1.8k Reading time ≈ 4 mins.
线段树 + 众数的好题。
CF653G
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Symbols count in article: 1.4k Reading time ≈ 3 mins.
Symbols count in article: 1.4k Reading time ≈ 3 mins.
一道埃筛 + 组合数学的题目。
CF843D
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Symbols count in article: 1.3k Reading time ≈ 3 mins.
Symbols count in article: 1.3k Reading time ≈ 3 mins.
Dijkstra 的好题。
P7843
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Symbols count in article: 2.7k Reading time ≈ 6 mins.
Symbols count in article: 2.7k Reading time ≈ 6 mins.
分治的妙妙题。
高精度模板
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Symbols count in article: 1.9k Reading time ≈ 4 mins.
Symbols count in article: 1.9k Reading time ≈ 4 mins.
暂不支持负数,可以支持 NTT 加速。
狄利克雷生成函数
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Symbols count in article: 3k Reading time ≈ 6 mins.
Symbols count in article: 3k Reading time ≈ 6 mins.
解决数论函数的有利武器。
NOI Online 2022 游记
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Symbols count in article: 1.5k Reading time ≈ 3 mins.
Symbols count in article: 1.5k Reading time ≈ 3 mins.
考的似乎比较套路,没有去年的思维 / 数学。
CF Round#775
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Symbols count in article: 3.6k Reading time ≈ 8 mins.
Symbols count in article: 3.6k Reading time ≈ 8 mins.
状态不错,F 只想得到线段树,思路还没清晰,就结束了……
比赛记录:ABCDE Accepted,Scores:6328,Rank #7,Rating 1663 -> 1962。
改题进度:ABCDE Accepted。
CF Round#773
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Symbols count in article: 4.5k Reading time ≈ 10 mins.
Symbols count in article: 4.5k Reading time ≈ 10 mins.
Div 2 当场降智,直接变成了 SpeedForces 了。
比赛记录:ABC Accepted,Scores:2247,Rank:872。
改题进度:ABCEF Accepted。
Min_25 筛
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Symbols count in article: 5.9k Reading time ≈ 13 mins.
Symbols count in article: 5.9k Reading time ≈ 13 mins.
非常 NB 的一个筛法,虽然复杂度可能会趋近线性 $O(n ^ {1 - \epsilon})$,但是在 OI 范围内非常不错。
AGC016F 题解
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Symbols count in article: 845 Reading time ≈ 2 mins.
Symbols count in article: 845 Reading time ≈ 2 mins.
$SG$ 函数的妙用。
CF566C
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Symbols count in article: 1.2k Reading time ≈ 3 mins.
Symbols count in article: 1.2k Reading time ≈ 3 mins.
求导的思想找极值点挺不错的,还有点分治降低树的高度。
UOJ671诡异操作 题解
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Symbols count in article: 2.5k Reading time ≈ 5 mins.
Symbols count in article: 2.5k Reading time ≈ 5 mins.
思想值得借鉴。