【验题报告】2025牛客暑期多校训练营7：AI 验题报告

快捷总览

本场 AI 的排名在总排行榜的 17~47 之间（答出 7 题），你可以在这里看到完整的榜单。

AI评估与代码查看

备注：本场使用了来自于 Vertex AI 的 Gemini-2.5-Pro 模型替代了较为不稳定的 Grok-4 模型。

/A. Loopy Laggon/

[00:00:27] o3 (from Azure) Accept! Click for code.
           CodeForces ≈ 1600, Div2.C
           组合数学 · 置换奇偶性
[00:01:43] Gemini-2.5-Pro (from Vertex AI) Accept! Click for code.
           CodeForces ≈ 1900, Div2.C~E
           贪心、不变量
[00:08:41] o3-Pro Accept! Click for code.
           CodeForces ≈ 1600, Div.2C~D
           置换奇偶性、思维（群论）

/B. A Gift from the Star/

[00:05:39] o3 (from Azure) Give up.

/C. Forsaken City/

[00:00:42] o3-Pro Accept! Click for code.
           CodeForces ≈ 1200, Div2.B~C
           贪心、前后缀极值维护
[00:00:51] o3 (from Azure) Accept! Click for code.
           CodeForces ≈ 1000, Div2.B
           贪心、后缀最小值
[00:01:52] Gemini-2.5-Pro (from Vertex AI) Accept! Click for code.
           CodeForces ≈ 1300, Div2.C
           贪心、前缀最大值

/D. Lost Woods/

[00:04:27] Gemini-2.5-Pro (from Vertex AI) Accept! Click for code.
           CodeForces ≈ 2300, Div2.E
           图论、动态规划、期望
[00:08:31] o3 (from Azure) Wrong Answer. 73/76.
[00:13:47] o3-Pro Wrong Answer. 50/76.
[00:16:55] o3-Pro Wrong Answer. 64/76.
[00:18:19] o3 (from Azure) Wrong Answer. 73/76.
[00:21:42] o3 (from Azure) Wrong Answer. 73/76.
[00:25:11] o3-Pro Wrong Answer. 64/76.
[00:33:34] o3-Pro Wrong Answer. 73/76.
[00:47:11] o3-Pro Time limit exceeded. 60/76.

/E. String/

[00:05:27] Gemini-2.5-Pro (from Vertex AI) Give up.
[00:15:51] o3-Pro Give up.
[00:45:30] o3 (from Azure) Give up.

/F. The Correlation/

[00:00:27] o3 (from Azure) Accept! Click for code.
           CodeForces ≈ 1100, Div2.B
           奇偶性不变量、贪心、构造
[00:03:13] Gemini-2.5-Pro (from Vertex AI) Accept! Click for code.
           CodeForces ≈ 1100, Div2.B~C
           数论、构造、不变量
[00:03:24] o3-Pro Accept! Click for code.
           CodeForces ≈ 1200, Div2.B~C
           奇偶不变量、构造、贪心

/G. Nice Doppelgnger/

[00:05:18] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/23.
[00:06:39] o3-Pro Accept! Click for code.
           CodeForces ≈ 1900, Div2.D
           数论（Liouville 函数）、构造、线性筛
[00:07:26] o3 (from Azure) Accept! Click for code.
           CodeForces ≈ 1800, Div2.D
           线性筛、数论（Liouville λ 函数）、构造
[00:08:52] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/23.
[00:11:22] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 2/23.
[00:14:18] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/23.
[00:16:18] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 2/23.
[00:18:28] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/23.

/H. Summit Down Side/

[00:03:19] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/60.
[00:06:50] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/60.
[00:10:03] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 54/60.
[00:12:21] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 57/60.
[00:14:43] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/60.
[00:17:31] Gemini-2.5-Pro (from Vertex AI) Accept! Click for code.
           CodeForces ≈ 2500, Div2.E~F
           分治、单调栈、二分查找
[00:20:07] o3-Pro Give up.
[01:01:56] o3 (from Azure) Give up.

/I. Lava Layer/

[00:02:15] o3-Pro Accept! Click for code.
           CodeForces ≈ 2500, Div1.E
           概率论（马尔可夫链）、块矩阵快速幂
[00:04:12] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.
[00:06:43] o3 (from Azure) Accept! Click for code.
           CodeForces ≈ 2300, Div2.E/Div1.C
           概率 DP、小状态矩阵快速幂、位运算
[00:07:24] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.
[00:09:56] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.
[00:12:18] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.
[00:14:18] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.
[00:18:05] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 0/13.

/J. Ivory/

[00:02:26] o3 (from Azure) Time limit exceeded. 31/43.
[00:03:53] o3-Pro Time limit exceeded. 33/43.
[00:04:39] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 27/43.
[00:04:45] o3 (from Azure) Time limit exceeded. 32/43.
[00:05:57] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:05:59] o3 (from Azure) Time limit exceeded. 33/43.
[00:07:28] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:07:30] o3-Pro Time limit exceeded. 33/43.
[00:08:35] o3 (from Azure) Time limit exceeded. 33/43.
[00:08:55] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:11:12] o3-Pro Time limit exceeded. 40/43.
[00:11:26] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:12:59] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:14:43] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.
[00:16:36] o3-Pro Time limit exceeded. 39/43.
[00:16:43] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 32/43.
[00:18:01] o3 (from Azure) Time limit exceeded. 33/43.
[00:18:09] o3-Pro Time limit exceeded. 40/43.
[00:19:26] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 31/43.
[00:20:27] o3-Pro Time limit exceeded. 39/43.
[00:21:11] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 31/43.
[00:23:07] Gemini-2.5-Pro (from Vertex AI) Wrong Answer. 31/43.
[00:24:24] Gemini-2.5-Pro (from Vertex AI) Time limit exceeded. 31/43.