杂题 题目列表 April Fools' Problem (hard) Shrinking Tree 随机数生成器 Substrings in a String [ZJOI2019] 语言 Nephren Runs a Cinema 長距離バス (Long Distance Coach) Heidi Learns Hashing (Hard) Intervals of Intervals [AGC056D] Subset Sum Game [CEOI 2017] Mousetrap [AGC056B] Range Argmax [蓝桥杯 2020 国 A] 蓝跳跳 [蓝桥杯 2021 国 A] 积木 [ARC106F] Figures The Awesomest Vertex 重返现世 Become Big For Me [AGC004F] Namori Red and Black Tree Cow and Exercise [PKUWC2018] Minimax [MtOI2019] 幽灵乐团 / 莫比乌斯反演基础练习题 [POI 2011] OKR-Periodicity [CTSC2012] 熟悉的文章 [HEOI2016/TJOI2016] 求和 [BJOI2019] 勘破神机 [ARC129E] Yet Another Minimization Fedya the Potter Strikes Back Mirror Box [ARC147F] Again ABC String Indecisive Taxi Fee Koishi's Unconscious Permutation [集训队作业2019] 青春猪头少年不会梦到兔女郎学姐 更简单的排列计数 「KrOI2021」Feux Follets 弱化版 「KrOI2021」Feux Follets [WC2019] 数树 烷烃计数 有标号荒漠计数 无标号无根树计数 点双连通图计数 边双连通图计数 [ARC100F] Colorful Sequences [ARC154F] Dice Game [ARC136F] Flip Cells [ARC134F] Flipping Coins [ARC133F] Random Transition [ARC139F] Many Xor Optimization Problems e