| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 420 | ccf#NOIPJ1998A 三连击 | 20 / 26 | 3 | |
| 421 | ccf#NOIPJ2001D 装箱问题 | 7 / 34 | 8 | |
| 422 | ccf#NOIPJ2002D 产生数 | 2 / 5 | 10 | |
| 423 | ccf#NOIPJ2003A 数字游戏 | 4 / 6 | 10 | |
| 424 | ccf#NOIPJ2004C FBI 树 | 16 / 21 | 4 | |
| 425 | ccf#NOIPJ2005A 陶陶摘苹果 | 40 / 68 | 2 | |
| 426 | ccf#NOIPJ2005C 采药 | 23 / 38 | 3 | |
| 427 | ccf#NOIPJ2015A 金币 | 22 / 48 | 4 | |
| 428 | ccf#NOIPJ2015B 扫雷游戏 | 12 / 16 | 6 | |
| 429 | ccf#NOIPJ2015C 推销员 | 6 / 7 | 9 | |
| 430 | ccf#NOIPJ2015D 求和 | 6 / 10 | 9 | |
| 431 | ccf#NOIPJ2016A 买铅笔 | 36 / 60 | 2 | |
| 432 | ccf#NOIPJ2016B 回文日期 | 24 / 73 | 6 | |
| 433 | ccf#NOIPJ2016C 海港 | 19 / 74 | 7 | |
| 434 | ccf#NOIPJ2016D 魔法阵 | 5 / 13 | 9 | |
| 435 | ccf#NOIPJ2017A 成绩 | 17 / 19 | 4 | |
| 436 | ccf#NOIPJ2017B 图书管理员(数据缺失) | 0 / 7 | 10 | |
| 437 | ccf#NOIPJ2018A 标题统计 | 39 / 67 | 2 | |
| 438 | ccf#NOIPJ2018B 龙虎斗 | 26 / 42 | 2 | |
| 439 | ccf#NOIPJ2018C 摆渡车 | 16 / 46 | 6 | |
| 440 | ccf#NOIPJ2018D 对称二叉树 | 15 / 38 | 5 |
By signing up a HydroOJ universal account, you can submit code and join discussions in all online judging services provided by us.