ID 题目 显示标签 隐藏标签 AC / 尝试 难度
2006 lg7073   【递归】[CSP-J2020] 表达式 21 / 63 6
7080 lg7150   [USACO20DEC] Stuck in a Rut S 11 / 28 6
7062 lg7295   [USACO21JAN] Paint by Letters P 2 / 12 10
7066 lg7299   [USACO21JAN] Dance Mooves S 10 / 96 9
3679 lg7323   [WC2021] 括号路径 1 / 1 10
10162 lg7804   [JOI Open 2021] 决算报告 1 / 1 10
2015 lg7963   [NOIP2021] 棋局 2 / 2 10
6998 lg7991   [USACO21DEC] Connecting Two Barns S 3 / 15 9
7660 lg8097   [USACO22JAN] Farm Updates G 6 / 17 8
7203 lg8315   [COCI 2021/2022 #4] Šarenlist 9 / 50 8
7257 lg8359   [SNOI2022] 垃圾回收 4 / 12 9
7258 lg8360   [SNOI2022] 军队 1 / 3 10
7092 lg8500   [NOI2022] 冒泡排序 1 / 2 10
7608 lg8905   [USACO22DEC] Strongest Friendship Group G 6 / 15 8
7685 lg9194   [USACO23OPEN] Triples of Cows P 3 / 5 10
9053 lg9352    [JOI 2023 Final] 训猫 / Cat Exercise 1 / 1 10
10158 lg9598   [JOI Open 2018] 山体滑坡 1 / 1 10
1849 lg9869   [NOIP2023] 三值逻辑 8 / 56 8
7590 lg9984   [USACO23DEC] A Graph Problem P 3 / 7 10
7390 lg10787   [NOI2024] 树的定向 1 / 2 10
7394 lg11049   [IOI 2024] 尼罗河船运 1 / 1 10
414 lg11095   [ROI 2021] 旅行 (Day 2) 23 / 60 5
6907 lg11453   *【差分约束】[USACO24DEC] Deforestation S 7 / 94 9
9062 lg11664   [JOI 2025 Final] 缆车 / Mi Teleférico 1 / 2 10
6922 lg11674   [USACO25JAN] Reachable Pairs G 11 / 93 8
12572 lg11755   [COCI 2024/2025 #5] 树树 2 / Stablo II 1 / 2 10
9584 lg12506   [ROI 2025 Day2] 沼泽里的青蛙 1 / 1 10
473 lg13980   数列分块入门 5 12 / 29 6
8414 lg14350   [JOISC 2019] 合并 / Mergers 1 / 1 10
8428 lg14383   [JOISC 2017] 港口设施 / Port Facility 1 / 1 10
8453 lg14411   [JOISC 2015] 道路建设 / Road Development 1 / 1 10
8456 lg14415   [JOISC 2015] 遗产继承 / Inheritance 1 / 1 10
5907 lg14422   [JOISC 2014] 水壶 / Water Bottle 1 / 1 10
4676 lg14423   [JOISC 2014] 有趣的交朋友 / Making Friends is Fun 2 / 13 9
2198 lg14980   [USACO26JAN1] COW Traversals G 4 / 15 9
12631 lg15352   [COCI 2025/2026 #4] 魔术 / Magija 9 / 49 8
6542 lg15570   [USACO26FEB] Make All Distinct B 9 / 22 7
9010 lg15815    [JOI 2014 Final] 裁剪线 1 / 1 10
9822 loj508   「LibreOJ NOI Round #1」失控的未来交通工具 0 / 0 (无)
418 loj2275   「JXOI2017」颜色 20 / 41 4
10525 loj2493   「BJOI2018」染色 1 / 1 10
2757 loj2654   「POI2007 R2」洪水 The Flood 9 / 37 7
4802 loj2686   「BalticOI 2013」雪地足迹 Tracks in the Snow 1 / 5 10
4456 loj2691   「POI2012 R1」约会 Rendezvous 1 / 2 10
3865 loj2693   「POI2012 R2」比赛路线 Tour de Byteotia 1 / 1 10
3972 loj2748   「CTSC2011」无穷图的桥 1 / 1 10
742 loj2781   「BalticOI 2016 Day1」公园 1 / 3 10
6675 loj3524   「IOI2021」钥匙 1 / 2 10
10865 loj3549   「COI 2020」Paint 1 / 2 10
8933 loj3643   「2021 集训队互测」球球 1 / 2 10
7459 loj3948   「春季测试 2023」密码锁 1 / 1 10
7322 loj4020   「CEOI2023」Tricks of the Trade 1 / 3 10
7208 loj4124   「PA 2024」Modernizacja Bajtocji 1 / 1 10
7401 loj4234   「NordicOI 2024」Thin Ice 1 / 1 10
5759 loj5032   「POI2016 R2」圣诞灯链 Christmas chain 1 / 1 10
2769 loj5337   「POI2008 R1」关税 Toll 8 / 16 8
11050 loj5370   「OOI 2023 Day 1」汽油价格 1 / 1 10
11139 loj5513   「COI 2024」Sirologija 1 / 1 10
9661 loj5619   「KTSC 2026 R1」通信网络 2 1 / 1 10
11182 loj5663   「JOI 2026 Final Day1」传说中的团子美食家 1 / 1 10
12548 loj5708   「NordicOI 2026」Name Change 1 / 1 10
10096 loj6038   「雅礼集训 2017 Day5」远行 3 / 11 9
11212 loj6157   A ^ B Problem 0 / 0 (无)
11324 loj6294   touch 0 / 0 (无)
11426 loj6548   「CERC2018」The Bridge on the River Kawaii 1 / 1 10
11431 loj6553   「CERC2018」Shooter Island 1 / 1 10
11464 loj6631   「EC Final 2018」异国情调的……古城 / Exotic … Ancient City 1 / 1 10

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