Archive | AFAIK

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202510

06-04

网站小更新

05-24

Sum-free subset 老题

05-18

Ten Days in the Zed Editor

03-23

Integer and Rational Solutions of a Binary Quadratic Equation (0): General binary quadratic equation

03-22

Integer and Rational Solutions of a Binary Quadratic Equation (5): Binary quadratic form

03-15

Integer and Rational Solutions of a Binary Quadratic Equation (4): Pell equation and generalized Pell equation

03-11

Integer and Rational Solutions of a Binary Quadratic Equation (3): $ax^2+by^2=n$

03-10

Integer and Rational Solutions of a Binary Quadratic Equation (2): Quadratic Residue

03-08

Integer and Rational Solutions to a Binary Quadratic Equation (1): Legendre equation

01-05

六个解谜游戏

202417

12-30

论 First Principle

10-20

The Optimal Order to Purchase Vampire Survivors Power Ups

10-12

Lake Tahoe 游记

09-30

09-25

08-28

夏威夷旅游小记

07-23

IMO 2024 P1 & P5

07-04

SIGYAO30 2024 @ Chicago

06-09

2024年新高考 1 卷数学最后一题

05-04

妙题一道（圆覆盖）

05-02

2023-09 回国小记

04-08

04-08

请选择你的司机

02-26

Manage Configurations: File Format

02-14

Manage Configurations: Intro

01-19

漫长的季节

01-01

202311

12-04

跑路文案解读

11-10

某积性函数前缀和算法的复杂度分析

11-08

SIGYAO30 2023 @ Seattle

06-10

两个关于子段和的题

05-14

（特殊情况下）函数重载是 NP-complete 的

04-19

从 fair coin 说起

03-25

Extended Lucas theorem

03-16

探底排序的时间复杂度

03-12

Google Codejam 和 TCO 无了

03-11

闲聊《来自深渊》，《三体》（腾讯）和《三体》（艺画开天）

01-08

主题小更新

20227

12-25

12-12

11-27

07-31

毕业（前）大旅行

05-25

03-23

Pre-Grad 四处浪小游记

01-22

吐槽几个 Rust 里写的不舒服的地方

20219

09-26

墨西哥小旅游（二）

08-29

墨西哥小旅游（一）

06-01

整个花里胡哨的终端

05-30

折纸 — 柴犬

05-01

如何实现 exp 函数

04-07

Dirichlet series 与算术函数前缀和

03-16

解析方法数质数：从入门到入土（下）

03-08

解析方法数质数：从入门到入土（上）

02-23

20205

12-27

再聊几个小游戏

12-14

Modulo by a Constant

12-01

SIGYAO30 文案解读

10-03

07-27

20172

12-31

一个有趣的概率小问题

07-09

最近的一些小操作

20161

04-06

UyHiP 2016 Feb Riddle

20153

12-19

两个有趣的小题目

12-15

一段关于 $\pi$ 的代码

05-03

假期一除草

201410

08-22

06-22

06-19

Across the Great Wall

06-08

05-31

05-02

APIO 2014 《抽象代数入门》

05-01

04-15

Untrusted 记录

03-07

2014 清华女生节特辑

01-30

Codeforces-326F

201388

11-06

11-02

烟花八月上帝都

11-01

ProjectEuler 404 - Crisscross Ellipses

10-29

ProjectEuler-translating

10-15

ProjectEuler 440 - GCD and Tiling

10-08

ProjectEuler 439 - Sum of sum of divisors

10-01

ProjectEuler 356 - Largest roots of cubic polynomials

09-23

ProjectEuler 437 - Fibonacci primitive roots

09-16

ProjectEuler-436 - Unfair wager

09-11

TOAD 27 - Another Hat Problem

09-04

TOAD 34 - Odd goings on

09-02

$k$-th minimum in a circle

08-23

姚班招生题目

08-06

多校第五场

08-06

Sophomore-dream

08-05

ProjectEuler-419-421

07-09

06-29

06-29

纪念高中君

06-28

TOAD 8 - Here comes Santa

06-26

06-21

$d$ 维球体 $k$ 远点期望

06-16

ProjectEuler 432 - Totient sum

06-09

06-06

ProjectEuler 430 - Range flips

06-04

06-03

Google Codejam Round 2 && POJ Challange Beta 1

05-31

TOAD 33 - Abduction

05-27

05-26

PE-429-and-HNU-A

05-23

TOAD 7 - The Gridville Garbash problem

05-19

无尽的远方，无数的人

05-17

TOAD 12 - Level with me

05-15

TOAD 21 - Searching for the truth

05-07

05-06

TOAD 24 - Fair Shares?

05-05

05-03

05-03

湖南卫视《成人礼》酱油记

04-29

04-25

TOAD 25 - Rational Creatures

04-23

04-18

04-17

TOAD 19 - Homework Scores

04-15

TOAD 3 - Take the Last Chip

04-13

04-12

TOAD 6 - Uniform Candy Distribution

04-12

04-11

TOAD 13 - The Voting Problem

04-11

04-10

TOAD 4 - Vacancy

04-09

TOAD 18 - Spiders and a Fly

04-08

04-07

04-07

TOAD 20 - Democracy

04-06

TOAD 37 - Zeroise Me

04-05

TOAD 2 - Lights of the Round Table

04-04

TOAD 5 - Empty the Bucket

04-02

03-31

Topcoder-OpenTopcoder-Round2A

03-30

03-30

03-25

「进行中」Dynamic Minimum Spanning Tree

03-23

03-17

03-15

03-11

Codeforces-172 出题感想

03-10

03-10

Topcoder-OpenTopcoder-Round1C

03-06

03-01

02-24

「完结」OI 生涯回忆录

02-21

02-20

02-17

Changjun-Online-Judge begins

02-16

02-14

02-13

02-12

Codeforces-166-div2

02-04

ID 那些事儿

02-01

01-31

WinterCamp-2013

01-23

01-21

01-20

01-14

01-13

01-05

201210

12-28

Codeforces-158-div2

12-26

12-23

12-22

12-22

lambda and closure

12-19

Codeforces-178E3 人眼识别题

12-18

xhr 的奇思妙想

12-18

12-17

12-12

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