数据结构：
CF780G Andryusha and Nervous Barriers
CF542A Place Your Ad Here
CF571D Campus
CF626G Raffles
CF679E Bear and Bad Powers of 42
P4331 [BOI2004]Sequence 数字序列
P4254 [JSOI2008]Blue Mary开公司
图论：
CF827D
AT2675 Two Trees
CF962F
dp：
CF303E Random Ranking
CF747F Igor and Interesting Numbers
CF599E Sandy and Nuts
CF865C Gotta Go Fast
CF295D Greg and Caves
贪心：
CF353E Antichain
CF746F Music in Car
bzoj5289 [HNOI/AHOI2018]排列
CF505E Mr. Kitayuta vs. Bamboos
爆搜：
UVA12558 Egyptian Fractions (HARD version)
P1379 八数码难题
bzoj1073
bzoj1082
数学：
SP16607 IE1 - Sweets
P2480 [SDOI2010]古代猪文
CF997C Sky Full of Stars
CF961G Partitions
CF891A Pride
CF915G Coprime Arrays
CF891E Lust
http://zijian-lv.com/problem/37 小猫咪和小狐狸