| 4387 | 【入门】打印空心等腰三角形 | 3 | 7 | 42.857% |
| 4388 | 【入门】蝴蝶结 | 10 | 12 | 83.333% |
| 4389 | 【基础】挑战赛第二题——放大的X | 14 | 17 | 82.353% |
| 4390 | 【入门】打印n行的完整的蝴蝶结 | 11 | 14 | 78.571% |
| 4391 | 【入门】轴对称三角形 | 14 | 22 | 63.636% |
| 4392 | P2440 木材加工 | 0 | 8 | 0.000% |
| 4393 | P5908 猫猫和企鹅 | 10 | 13 | 76.923% |
| 4394 | 并查集 | 6 | 29 | 20.690% |
| 4395 | P1536 村村通 | 8 | 12 | 66.667% |
| 4396 | P2367 语文成绩 | 39 | 46 | 84.783% |
| 4397 | P1873 [COCI2011-2012#5] EKO / 砍树（普及/提高-） | 13 | 27 | 48.148% |
| 4398 | 营救 | 4 | 9 | 44.444% |
| 4399 | 硬币翻转 | 5 | 6 | 83.333% |
| 4400 | 统计字符串的次数 | 4 | 4 | 100.000% |
| 4401 | 【队列】最少步数（例题） | 21 | 40 | 52.500% |
| 4402 | 图的广度优先遍历 | 10 | 21 | 47.619% |
| 4403 | 闭合曲线面积 square | 2 | 2 | 100.000% |
| 4404 | 朋友 | 13 | 17 | 76.471% |
| 4405 | 机器人比赛 | 1 | 1 | 100.000% |
| 4406 | 神奇的9【BFS】 | 0 | 11 | 0.000% |
| 4407 | 参考文献 | 0 | 0 | 0.000% |
| 4408 | bfs | 16 | 36 | 44.444% |
| 4409 | B3622 枚举子集 | 29 | 37 | 78.378% |
| 4410 | P9011 [USACO23JAN] Air Cownditioning II B | 17 | 19 | 89.474% |
| 4411 | 食物链--并查集训练T4 | 8 | 8 | 100.000% |
| 4412 | 通信系统 | 1 | 3 | 33.333% |
| 4413 | 【树形动态规划】皇宫看守 | 1 | 2 | 50.000% |
| 4414 | NASA的食物计划 | 4 | 9 | 44.444% |
| 4415 | P2958 [USACO09OCT] Papaya Jungle G | 43 | 93 | 46.237% |
| 4416 | 彩票 | 5 | 7 | 71.429% |
| 4417 | P8185 [USACO22FEB] Blocks B | 4 | 5 | 80.000% |
| 4418 | P6065 [USACO05JAN] Sumsets S | 3 | 3 | 100.000% |
| 4419 | P2978 [USACO10JAN] Tea Time S | 7 | 8 | 87.500% |
| 4420 | P8184 [USACO22FEB] Photoshoot 2 B | 3 | 4 | 75.000% |
| 4421 | P3669 [USACO17OPEN] Paired Up S | 7 | 8 | 87.500% |
| 4422 | P3405 [USACO16DEC] Cities and States S | 3 | 3 | 100.000% |
| 4423 | P2873 [USACO07DEC] Mud Puddles S | 13 | 18 | 72.222% |
| 4424 | 最大整数（NOIP99) | 3 | 3 | 100.000% |
| 4425 | 区间相交问题 | 12 | 45 | 26.667% |
| 4426 | P8897 [USACO22DEC] Cow College B | 5 | 5 | 100.000% |
| 4427 | P7993 [USACO21DEC] Lonely Photo B | 3 | 4 | 75.000% |
| 4428 | P8267 [USACO22OPEN] Counting Liars B | 18 | 25 | 72.000% |
| 4429 | 奖学金(reward) | 12 | 25 | 48.000% |
| 4430 | 最短路 | 4 | 4 | 100.000% |
| 4431 | 聚会 | 2 | 2 | 100.000% |
| 4432 | 中级第三课——A类B类二进制数 | 2 | 3 | 66.667% |
| 4433 | 加分二叉树-NOIP2003TGT3 | 3 | 3 | 100.000% |
| 4434 | 发射站 | 20 | 35 | 57.143% |
| 4435 | 单词查找树 | 5 | 5 | 100.000% |
| 4436 | 二叉苹果树--树型动态规划训练T1 | 1 | 1 | 100.000% |