PRMQUER - Prime queries

线段树

PAML - Popeye and the magical land

CWB - Chipmunks with Brain

MATPROD - Symmetric matrix

MCAMP - Mining Camps

MATPROD2 - Symmetric matrix 2

MTETRA - Modular Tetration

GGD - Mr Toothless and His GCD Operation

最大公约数 gcd · 构造

PSYCHOT - Psycho34 (easy)

MIDEARTH - Middle Earth

PYTRIP3 - Counting Pythagorean Triples

KN2 - Travelling Knight 2

APPROB - GETTING AN AP

HAL9000 - 100pct failure in 72 hours

APS2 - Amazing Prime Sequence (hard)

CUBE - HYPERCUBES

GCDEX2 - GCD Extreme (hard)

杜教筛

FAILURE - In case of failure

MOON1 - Moon Safari (medium)

MOON2 - Moon Safari (Hard)

SNGLOOP1 - Easiest Loop 1

HIPPO - Hippo and Bloody Jungle

PIHU2 - Love Story 2

LARSUBP - Large subsequence Problem

HONDA - Honda and Kagawa

ARRHUDAI - Array with Hudai Calculation

COLORSEG - Coloring Segments

DIVISION - Divisiblity by 3

DIVCNT2 - Counting Divisors (square)

莫比乌斯反演 · 前缀和 · 容斥原理

DIVCNT3 - Counting Divisors (cube)

杜教筛 · 筛法

DIVEQL - The Magical Bag

BOI02TRI - Triangles

计算几何 · 扫描线

TANDC - Tracy and Charlie

MCIRCLE - Minion Circle

DORTMUND - Dortmund Dilemma

AJOB - Ajob Subsequence

ZQUERY - Zero Query

INTSUB - Interesting Subset

CNTINDX - Count The Indexes

WRP - WA,RTE and Placements

GEMS - LAZY FRIENDS

RTREE - Roger and tree

动态规划 DP · 树形 DP

INUM - Interesting Numbers

ISELECT - Interesting Selection

IGAME - Interesting Game

IQUERY - Interesting queries

MINSUB - Largest Submatrix

二分 · 单调栈

PCOPTRIP - Counting Pairwise Coprime Triples

REVADD - Special Numbers (Reverse and Add)

EC_SER - Progression