ID 题目 显示标签 隐藏标签 AC / 尝试 难度
12480 lg15578   [USACO26FEB] Random Tree Generation G 1 / 1 10
9673 lg15649   [省选联考 2026] 找寻者 1 / 2 10
9014 lg15819    [JOI 2015 Final] 舞会 1 / 1 10
12649 lg16452   [APIO 2026] APIOBike 0 / 0 (无)
6541 lg16574   [USACO26OPEN] Perfect Binary Trees 1 / 1 10
12612 lg17145   [NOI 2026] 彩虹树 1 / 1 10
9825 loj511   「LibreOJ NOI Round #1」验题 0 / 0 (无)
9837 loj523   「LibreOJ β Round #3」绯色 IOI(悬念) 0 / 0 (无)
6222 loj2024   「JLOI / SHOI2016」侦查守卫 3 / 5 10
6258 loj2041   「SHOI2015」聚变反应炉 2 / 2 10
4190 loj2165   「POI2011 R3」炸药 Dynamite 1 / 2 10
4191 loj2167   「POI2011 R3」视察 Inspection 1 / 1 10
5231 loj2192   「SHOI2014」概率充电器 1 / 1 10
10749 loj2296   「NOI2002」贪吃的九头龙 1 / 1 10
3775 loj2357   「NOI2007」追捕盗贼 1 / 1 10
5187 loj2431   「POI2014 R1」酒店 Hotels 3 / 3 10
2270 loj2470   「2018 集训队互测 Day 2」有向图 1 / 1 10
2429 loj2482   「CEOI2017」Mousetrap 1 / 1 10
2432 loj2485   「CEOI2017」Chase 1 / 2 10
10379 loj2556   「CTSC2018」字典树 1 / 2 10
2870 loj2559   「HNOI2003」消防局的设立 1 / 4 10
3651 loj2983   「WC2019」数树 1 / 2 10
10368 loj3124   「CTS2019 | CTSC2019」氪金手游 1 / 1 10
2411 loj3350   E97 换根DP+矩阵加速「CEOI2020」星际迷航 1 / 2 10
10416 loj3390   「2020-2021 集训队作业」大鱼治水 1 / 1 10
10419 loj3393   「2020-2021 集训队作业」Game on Tree 1 / 1 10
10425 loj3399   「2020-2021 集训队作业」Communication Network 1 / 1 10
10866 loj3550   「COI 2020」Pastiri 1 / 1 10
10570 loj3563   「BalticOI 2021 Day2」The Xana coup 1 / 1 10
8918 loj3626   「2021 集训队互测」愚蠢的在线法官 1 / 3 10
4832 loj3802   「HEOI2013」SAO 1 / 1 10
7564 loj4168   「CCO 2024」Summer Driving 1 / 1 10
7351 loj4189   「BalticOI 2023」Minequake 1 / 1 10
7401 loj4234   「NordicOI 2024」Thin Ice 1 / 1 10
10290 loj4302   「ROIR 2019 Day2」探险队 0 / 0 (无)
5494 loj4896   E60 树形DP+贪心 「POI2014 R3」农场工艺 FarmCraft 2 / 2 10
6391 loj4911   「POI2017 R1」破坏 Sabotage 1 / 1 10
5537 loj4929   「POI2014 R3」蚁巢 Ant colony 1 / 1 10
5085 loj5010   「POI2013 R2」凯旋门 Triumphal arch 2 / 3 10
10986 loj5240   「UOI 2020 Stage 4 Day2」树的拓扑排序 1 / 1 10
10207 loj5269   「NOISG 2025 Final」Reachability 1 / 2 10
10335 loj5393   「ROI 2014 Day 1」玩具自动售货机 1 / 1 10
10090 loj6032   「雅礼集训 2017 Day2」水箱 3 / 26 9
11209 loj6093   「Codeforces Round #418」白金夜话 0 / 0 (无)
11225 loj6171   记忆的轮廓 0 / 0 (无)
11226 loj6172   Samjia 和大树 0 / 0 (无)
11229 loj6175   「美团 CodeM 初赛 Round B」黑白树 0 / 0 (无)
11311 loj6272   「BestCoder Round #88」Tree Cutting(改) 0 / 0 (无)
10602 loj6391   「THUPC 2018」淘米神的树 / Tommy 0 / 0 (无)
11385 loj6400   yww 与连通块计数 0 / 0 (无)
11399 loj6483   LJJ 爱数树 0 / 0 (无)
11414 loj6536   收缩的树 0 / 0 (无)
9776 loj6699   然而第六章的 A 面并没有草莓 1 / 1 10
9763 loj6712   数树上块 1 / 1 10
9742 loj6733   人造情感 1 / 1 10
9694 loj6912   奇迹之夜 1 / 1 10

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