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Pick a problem randomly based on the current filter.
| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 2994 | CSES2166 前缀和查询 | 0 / 0 | 2 | |
| 2044 | CSPJ2023B 公路 | 7 / 32 | 2 | |
| 3491 | CSPJ2025C 异或和 / xor | 1 / 3 | 3 | |
| 663 | CSPS2021A 廊桥分配 | 2 / 20 | 4 | |
| 2271 | CSPS2024C 染色 | 1 / 76 | 5 | |
| 668 | NOIP2020B 字符串匹配 | 0 / 0 | 5 | |
| 734 | NOIPJ2003A 数字游戏 | 0 / 0 | 4 | |
| 750 | NOIPJ2015D 求和 | 0 / 0 | 4 | |
| 741 | NOIPJ2016D 魔法阵 | 0 / 0 | 4 | |
| 732 | NOIPJ2018C 摆渡车 | 0 / 0 | 5 | |
| 711 | NOIPS2011B 选择客栈 加强版 | 0 / 6 | 4 | |
| 714 | NOIPS2011E 聪明的质监员 | 0 / 0 | 4 | |
| 720 | NOIPS2012E 借教室 | 4 / 45 | 3 | |
| 693 | NOIPS2015E 子串 | 0 / 0 | 4 | |
| 698 | NOIPS2016D 组合数问题 | 0 / 0 | 3 | |
| 1114 | 1114 最大子阵 | 0 / 2 | 3 | |
| 2003 | 2003 前缀和 | 7 / 13 | 3 | |
| 2005 | 2005 海底高铁 | 7 / 41 | 3 | |
| 2048 | 2048 领地选择 | 5 / 24 | 3 | |
| 2049 | 2049 最大加权矩形 | 4 / 15 | 2 | |
| 2053 | 2053 子矩阵的和 | 6 / 13 | 2 | |
| 2062 | 2062 报数的牛 | 4 / 72 | 3 | |
| 2208 | 2208 [GESP202406 七级] 区间乘积 | 0 / 0 | 3 | |
| 2325 | 2325 美人松的高度2(多次统计) | 0 / 23 | 2 | |
| 2842 | 2842 [GESP七级202503] 等价消除 | 0 / 0 | 3 | |
| 2863 | 2863 数列求和 | 1 / 4 | 2 | |
| 2864 | 2864 m倍的区间 | 1 / 3 | 2 | |
| 2868 | 2868 激光炸弹 | 1 / 1 | 2 | |
| 3199 | 3199 数组-炸弹 | 0 / 0 | 2 | |
| 322 | P4677 山区建小学 | 1 / 2 | 4 | |
| 511 | T1432 「一本通 1.1 练习 6」糖果传递 | 0 / 0 | 5 | |
| 513 | T1434 「一本通 1.2 例 2」Best Cow Fences | 0 / 0 | 3 | |
| 1181 | T1610 「一本通 5.6 练习 1」玩具装箱 | 0 / 0 | 6 | |
| 1183 | T1612 「一本通 5.6 练习 3」特别行动队 | 0 / 0 | 6 | |
| 849 | USACOC1111A Above the Median | 0 / 2 | 3 | |
| 3630 | p2294 狡猾的商人 | 0 / 0 | 4 |
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