ID Problem Show tags Hide tags AC / Tried Difficulty
16411 P11607   [PA 2016] 寻踪 / Ciepło-zimno 0 / 0 7
16089 P11625   [迷宫寻路 Round 3] 迷宫寻路大赛 0 / 0 7
16540 P11677   [USACO25JAN] Shock Wave P 0 / 0 9
16617 P11733   [集训队互测 2015] 上帝之手 0 / 0 8
16483 P11761   [IAMOI R1] 明码标价 0 / 0 7
16564 P11807   [PA 2017] 抄作业 0 / 0 8
16731 P11830   [省选联考 2025] 幸运数字 1 / 10 7
16734 P11833   [省选联考 2025] 推箱子 0 / 0 7
16716 P11845   [USACO25FEB] Min Max Subarrays P 0 / 0 8
16727 P11849   [TOIP 2023] 裁員風暴 0 / 0 6
15228 P11854   [CSP-J 2022 山东] 宴会 0 / 0 3
16786 P11880   [RMI 2024] 选区间 / Choose Interval 0 / 0 9
16866 P11951   [科大国创杯初中组 2023] 数数 0 / 0 3
16642 P11971   「ALFR Round 7」T4 xor xor 0 / 0 7
14873 P12000   扶苏出勤日记 0 / 0 6
16911 P12038   [USTCPC 2025] 送温暖 0 / 0 8
17134 P12167   [蓝桥杯 2025 省 C/Python A] 倒水 0 / 0 5
17236 P12269   [蓝桥杯 2024 国 Python B] 切木棒 0 / 0 5
17255 P12283   [蓝桥杯 2024 国 Python A] 排练 0 / 0 6
17294 P12342   [蓝桥杯 2025 省 B/Python B 第二场] 数列差分 0 / 0 3
17213 P12360   [eJOI 2024] 足球决斗 / CF Duels 0 / 0 7
17309 P12370   [蓝桥杯 2022 省 Python B] 技能升级 0 / 0 5
17315 P12380   [蓝桥杯 2023 省 Python B] 管道 0 / 0 5
15588 P12398   「FAOI-R9」决战黎明 0 / 0 7
16852 P12413   「YLLOI-R1-T2」圣诞星 0 / 0 5
16858 P12458   [JOI2025 预选赛 R2] 冰淇淋 / Softcream 0 / 0 6
17393 P12479   [集训队互测 2024] 长野原龙势流星群 0 / 0 8
17387 P12483   [集训队互测 2024] 人间应又雪 0 / 0 9
15759 P12519   「MSTOI-R1」热开水 0 / 0 5
17400 P12531   [XJTUPC 2025] Beat Verdict: Precision Strike 0 / 0 6
17403 P12532   [XJTUPC 2025] Primal Core Optimization: Attribute Balance 0 / 0 8
17408 P12537   [XJTUPC 2025] 罗斯飞鸽 0 / 0 7
17410 P12539   [XJTUPC 2025] 结束乐队 0 / 0 6
17458 P12570   [UOI 2023] An Array and Medians of Subarrays 0 / 0 7
17534 P12656   [KOI 2023 Round 1] 道具获取 0 / 0 5
17549 P12664   [KOI 2023 Round 2] 烤肉派对 0 / 0 6
15754 P12673   「LAOI-8」Change 0 / 0 3
17556 P12689   [KOI 2022 Round 1] 巨大的城市 0 / 0 6
17567 P12701   [KOI 2022 Round 2] 升级 0 / 0 7
17582 P12725   [KOI 2021 Round 2] 累计距离 0 / 0 5
12521 P12733   磨合 0 / 0 5
17676 P12818   [NERC 2021] Even Split 0 / 0 7
17689 P12835   [蓝桥杯 2025 国 B] 蓝桥星数字 0 / 0 6
17692 P12838   [蓝桥杯 2025 国 B] 子串去重 0 / 0 5
17718 P12862   [NERC 2020 Online] Miser 0 / 0 5
17810 P12953   [GCJ Farewell Round #2] Spacious Sets 0 / 0 5
17774 P13010   【MX-X13-T5】「KDOI-12」茫茫人海如都市的晚高峰,迎面的车终将相遇,迎面的车终将分别。 0 / 0 7
17878 P13013   [GESP202506 五级] 奖品兑换 0 / 3 5
17872 P13033   [GCJ 2021 #1C] Roaring Years 0 / 0 7
17908 P13057   [GCJ 2020 #1B] Blindfolded Bullseye 0 / 0 7
17913 P13062   [GCJ 2020 #2] Incremental House of Pancakes 0 / 0 6
18575 P13091   [FJCPC 2025] 中位数 0 / 0 7
18622 P13117   [GCJ 2019 #2] New Elements: Part 2 0 / 0 8
18629 P13123   [GCJ 2019 Finals] Board Meeting [Can't Judge yet] 0 / 0 8
18641 P13137   [GCJ 2018 #1A] Bit Party 0 / 0 6
18645 P13141   [GCJ 2018 #1B] Transmutation 0 / 0 7
18660 P13153   [GCJ 2018 Finals] Jurisdiction Restrictions 0 / 0 8
18662 P13155   [GCJ 2018 Finals] Go, Gophers! 0 / 0 8
18666 P13159   [GCJ 2017 Qualification] Tidy Numbers 0 / 0 5
18727 P13216   [GCJ 2015 #1A] Haircut 0 / 0 5
18747 P13236   [GCJ 2015 Finals] Taking Over The World 0 / 0 9
18767 P13260   [GCJ 2014 #3] Magical, Marvelous Tour 0 / 0 6
18769 P13262   [GCJ 2014 #3] Crime House 0 / 0 8
18775 P13268   [GCJ 2014 Finals] Allergy Testing 0 / 0 8
18791 P13276   [NOI2025] 绝对防御 0 / 0 9
18783 P13285   [GCJ 2013 #1A] Bullseye 0 / 0 5
18801 P13295   [GCJ 2013 #2] Many Prizes 0 / 0 6
18804 P13298   [GCJ 2013 #3] Cheaters 0 / 0 6
18810 P13304   [GCJ 2013 Finals] X Marks the Spot 0 / 0 9
18824 P13318   [GCJ 2012 #1B] Safety in Numbers 0 / 0 6
18828 P13322   [GCJ 2012 #1C] Out of Gas 0 / 0 7
18837 P13329   [GCJ 2012 #3] Havannah 0 / 0 8
18838 P13330   [GCJ 2012 #3] Quality Food 0 / 0 8
18848 P13340   [EGOI 2025] Dark Ride 0 / 0 7
18864 P13356   [GDCPC 2024] 图 0 / 0 8
18878 P13369   [GCJ 2011 #1B] Revenge of the Hot Dogs 0 / 0 6
18885 P13376   [GCJ 2011 #2] Expensive Dinner 0 / 0 6
18887 P13378   [GCJ 2011 #3] Irregular Cakes 0 / 0 6
18944 P13427   [COCI 2020/2021 #2] Odasiljaci 0 / 0 5
18960 P13443   [GCJ 2009 #2] Watering Plants 0 / 0 7
18586 P13494   【MX-X14-T4】分门别类 0 / 0 7
18609 P13500   「Cfz Round 6」Kyu-kurarin 0 / 0 5
19020 P13514   [KOI 2025 #1] 干草堆 0 / 0 7
19040 P13528   [OOI 2023] Gasoline prices / 油价 0 / 0 9
19061 P13538   [IOI 2025] Festival 0 / 0 9
18335 P13557   【MX-X15-T4】炸鱼鱼 0 / 0 6
19119 P13610   [NWRRC 2022] Mex and Cards 0 / 0 7
19155 P13650   [NOISG 2016] UnluckyFloors 0 / 0 7
18473 P13696   「CyOI」出包魔法师 0 / 0 7
19124 P13730   【MGVOI R1-B】完美重排(sort) 0 / 0 5
19204 P13734   [JOIGST 2025] 雪球 2 / Snowball 2 0 / 0 5
19207 P13736   [JOIGST 2025] 日本浮现 / Japan Emerges 0 / 0 6
19233 P13750   [NWERC 2024] Limited Library 0 / 0 5
19077 P13762   Extended Fibonacci 0 / 0 5
19253 P13770   [CERC 2021] Radar 0 / 0 6
19256 P13773   [CERC 2021] Single-track railway 0 / 0 6
18421 P13790   「CZOI-R6」Border 0 / 0 7
19297 P13802   [SWERC 2023] Team selection 0 / 0 7
18927 P13824   「Diligent-OI R2 D」在水一方 0 / 0 6
19317 P13848   [CERC 2023] Drying Laundry 0 / 0 7

Categories

Lucky

Pick a problem randomly based on the current filter.