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AtCoder ABC 290 E Make it Palindrome
AtCoder ABC 290 F Maximum Diameter
AtCoder ABC 291 G OR Sum
AtCoder ABC 292 F Regular Triangle Inside a Rectangle
AtCoder ABC 299 Find by Query
AtCoder ABC 299 F Square Subsequence
AtCoder ABC 300 G P-smooth number
BZOJ 1233 干草堆tower
BZOJ 2821 作诗(Poetize)
CF 1693B Fake Plastic Tree
CF 1699C The Third Problem
CF 1701C Schedule Management
CF 1701D Permutation Restoration
CF 1701E Text Editor
CF 1704D Magical Array
CF 1709C Recover an RBS
CF 1721D Maximum AND
CF 1795E Explosions?
CF 1795F Blocking Chips
CF 1795G Removal Sequences
CF 1815B Sum Graph
CF 396C On Changing Tree
CF 856C Eleventh Birthday
号家军 C297 B 序列
号家军 C297 C 绘画
号家军 C297 D 聚会
CWOI J C103C 红裤衩
CWOI J C103 D 观者
CWOI J C30B 幻想商店
CWOI J C30C 覆盖
CWOI J C30D 糖果
CWOI S C0176B 木棒
CWOI S C0176D 翻转硬币
CWOI S C0216 C 进化
CWOI S C0223 C 金条争夺
CWOI S C0223 D 推销员
CWOI S C0224 A 姨
CWOI S C0229 A 匹配
CWOI S C0229 B 狼人
CWOI S C0229 C 旅行
CWOI S C0232 A 前k大
CWOI S C0244 D 数数题
CWOI S C0279 B 缘
CWOI S C0279 C 愿
CWOI S C0279 D 怨
CWOI S C0281 D 棋盘
CWOI S C0294B 介值
CWOI S C0294C 货币系统
CWOI S C0297C on
CWOI S C0299 B 游戏
CWOI S C0299 C 树题
CWOI S C0299 D 木又寸题
CWOI S C0314 B 快哭了
CWOI S C0314 C 色
CWOI S C0314 D 发怒
CWOI S C0319 B 小黄鸭和最短路
CWOI S C0319 B 小黄鸭与数列
CWOI S C0324 A 分组
CWOI S C0324 C 折纸
CWOI S C0327 B 或
CWOI S C0327 C 数
CWOI S C0354 C 箱子
CWOI S C0369 C follow
CWOI S C0401 B 递归
CWOI S C0442 B 涂装
ICPC 2021 上海区域赛 F Kaiji!
JOISC 2018 D 修行 (Asceticism)
LibreOJ 6039 珠宝
PA2021 Wystawa