ID 题目 显示标签 隐藏标签 AC / 尝试 难度
9606 lg13999   [eJOI 2025]收集钻石 1 / 2 10
9608 lg14003   [eJOI 2025] Reactions 1 / 1 10
9609 lg14004   [eJOI 2025] Vacation 1 / 1 10
8411 lg14347   [JOISC 2019] 灯 / Lamps 1 / 1 10
8414 lg14350   [JOISC 2019] 合并 / Mergers 1 / 1 10
1375 lg14362   D145 最小生成树 Kruskal 算法[CSP-S 2025] 道路修复 30 / 73 5
8418 lg14367   [JOISC 2018] 帐篷 / Tents 1 / 1 10
8424 lg14374   [JOISC 2018] 糖果 / Candies 1 / 1 10
8425 lg14375   [JOISC 2018] 图书馆 / Library 1 / 2 10
8440 lg14397   [JOISC 2016] 雇佣计划 / Employment 1 / 1 10
8444 lg14401   [JOISC 2016] 电报 / Telegraph 1 / 1 10
8449 lg14407   [JOISC 2015] 有趣的家庭菜园 2 / Growing Vegetables is Fun 2 1 / 1 10
8453 lg14411   [JOISC 2015] 道路建设 / Road Development 1 / 1 10
8455 lg14413   「[JOISC 2015] 有趣的卡牌游戏 / Card Game Is Great Fun 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
5903 lg14427   [JOISC 2014] 电压 / Voltage 1 / 1 10
8988 lg14430   [JOISC 2013] 公交换乘 / Bus Tour 1 / 1 10
8989 lg14431   [JOISC 2013] 有趣的图像收集 / Collecting Images is Fun 1 / 1 10
8996 lg14439   [JOISC 2013] 考拉 / Koala 1 / 1 10
12623 lg14598   [COCI 2025/2026 #2] 搭塔 / Tornjevi 1 / 1 10
12626 lg14779   [COCI 2025/2026 #3] 宴会 / Domjenak 7 / 28 7
5397 lg14978   [USACO26JAN1] Mooclear Reactor S 8 / 37 7
2198 lg14980   [USACO26JAN1] COW Traversals G 4 / 15 9
2290 lg14981   [USACO26JAN1] Milk Buckets G 5 / 15 8
3888 lg14982   [USACO26JAN1] Supervision G 3 / 6 10
9647 lg15128   [ROIR 2026] 跛脚国王 0 / 1 10
2267 lg15260   [USACO26JAN2] Balancing the Barns G 4 / 40 9
2268 lg15261   [USACO26JAN2] Lexicographically Smallest Path G 2 / 30 9
2269 lg15262   [USACO26JAN2] The Chase G 3 / 13 9
10414 lg15275   [IOI 2016] Unscrambling a Messy Bug 解读 Bug 1 / 1 10
12633 lg15354   [COCI 2025/2026 #4] 体育课 / Tjelesni 4 / 22 9
12636 lg15567   [COCI 2025/2026 #5] 五步 / Pet 8 / 58 8
12476 lg15574   [USACO26FEB] Milk Buckets S 5 / 25 8
12477 lg15575   [USACO26FEB] Point Elimination S 5 / 29 8
12478 lg15576   [USACO26FEB] Good Cyclic Shifts G 1 / 1 10
12480 lg15578   [USACO26FEB] Random Tree Generation G 1 / 1 10
9676 lg15652   [省选联考 2026] 排列游戏 5 / 48 9
9009 lg15814   [JOI 2014 Final] 蜜袋鼯 1 / 1 10
9015 lg15820    [JOI 2015 Final] 城墙 1 / 4 10
10154 lg15832   [JOI Open 2015] 消毒喷雾 1 / 1 10
12641 lg15890   [COCI 2025/2026 #6] 抄写 / Prepisivanje 8 / 58 8
12643 lg15892   [COCI 2025/2026 #6] 教室 / Učionica 11 / 44 7
5227 loj2189   「SHOI2014」神奇化合物 1 / 1 10
5274 loj2217   「HEOI2014」人人尽说江南好 1 / 1 10
6196 loj2231   「BJOI2014」路径 1 / 1 10
5294 loj2234   「JLOI2014」聪明的燕姿 1 / 2 10
10538 loj2274   「JXOI2017」加法 1 / 1 10
10520 loj2280   「FJOI2017」矩阵填数 1 / 1 10
3060 loj2297   「NOI2002」荒岛野人 13 / 112 8
4214 loj2301   「CTSC2001」排序二叉树 1 / 3 10
8967 loj2324   「清华集训 2017」小 Y 和二叉树 1 / 2 10
10521 loj2520   「FJOI2018」所罗门王的宝藏 1 / 1 10
10540 loj2544   「JXOI2018」游戏 1 / 1 10
2870 loj2559   「HNOI2003」消防局的设立 1 / 4 10
4188 loj2646   「CTSC2001」聪明的学生 1 / 1 10
10647 loj2750   「CCO 2017」Vera 与道路建设 1 / 1 10
10649 loj2752   「CCO 2017」Vera 与现代艺术 1 / 1 10
10583 loj2774   「BalticOI 2018」多角恋 1 / 1 10
10588 loj2779   「BalticOI 2018」路径 1 / 1 10
10661 loj2794   「CCO 2015」太阳能飞行 1 / 2 10
10663 loj2796   「CCO 2015」定音鼓手 1 / 1 10
7190 loj2803   「CCC 2018」最大战略储备 1 / 1 10
10794 loj3083   「GXOI / GZOI2019」与或和 0 / 0 (无)
10814 loj3138   「COI 2019」LJEPOTICA 0 / 0 (无)
2417 loj3164   「CEOI2019」立方填词 1 / 1 10
10715 loj3215   「PA 2019」Muzyka pop 1 / 1 10
10271 loj3260   「ROIR 2020 Day1」机器人锦标赛 0 / 1 10
10867 loj3551   「COI 2020」Semafor 1 / 1 10
10135 loj3672   「北大集训 2021」基因编辑 1 / 1 10
7261 loj3737   「LNOI2022」吃 1 / 1 10
7262 loj3738   「LNOI2022」题 1 / 1 10
4828 loj3798   「HEOI2013」Eden 的新背包问题 1 / 1 10
4829 loj3799   「HEOI2013」Eden 的博弈树 1 / 1 10
7277 loj3814   「CEOI2022」Homework 1 / 2 10
7280 loj3817   「CEOI2022」Measures 1 / 1 10
10695 loj3864   「PA 2020」Liczba Potyczkowa 1 / 1 10
10700 loj3869   「PA 2020」Elektrownie i fabryki 1 / 1 10
10703 loj3872   「PA 2020」Miny 1 / 1 10
7324 loj4032   「CCO 2023」Binaria 1 / 1 10
7325 loj4033   「CCO 2023」Real Mountains 1 / 1 10
7327 loj4035   「CCO 2023」Flip it and Stick it 1 / 1 10
7616 loj4047   「POI 2023/2024 R1」Budowa lotniska 3 / 18 9
7618 loj4049   「POI 2023/2024 R1」Przyciski 2 / 10 10
3417 loj4102   「POI 2021/2022 R1」Impreza krasnali 1 / 1 10
7208 loj4124   「PA 2024」Modernizacja Bajtocji 1 / 1 10
7454 loj4131   「PA 2024」Żelki 1 / 1 10
7545 loj4140   「PA 2024」Bardzo Ulubiony Ciąg 1 / 1 10
10639 loj4146   「CCO 2019」Marshmallow Molecules 1 / 1 10
10640 loj4147   「CCO 2019」Bad Codes 1 / 1 10
7563 loj4167   「CCO 2024」Pizza Party 1 / 1 10
7573 loj4177   「CEOI2024」洒水器 7 / 16 8
7349 loj4187   「BalticOI 2023」Staring Contest 1 / 1 10
7350 loj4188   「BalticOI 2023」Tycho 1 / 1 10
7351 loj4189   「BalticOI 2023」Minequake 1 / 1 10
7584 loj4194   「BalticOI 2024」Trains 1 / 1 10
7585 loj4195   「BalticOI 2024」Fire 1 / 2 10
7355 loj4236   「NordicOI 2023」Ice Cream Machines 0 / 0 (无)
10916 loj4242   「NordicOI 2021」The Elk 0 / 0 (无)
10917 loj4243   「NordicOI 2021」Amazing Whispers 0 / 0 (无)

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