不要假设 python 可用 ——Windows 上 where python 可能命中 Microsoft Store stub（假成功），必须先过 P1。 不要复用源码目录里现成的 start-zcode.bat ——它是上一台机器的安装器生成的产物，内嵌那台机器的 Python 路径和上游表；换机后必须由安装器重新生成。

给定一个包含 (n) 个结点、(m) 条边的有向图，结点编号为 (1) 到 (n)。每条边都有一个整数边权，边权可能为负数。请判断整个图中是否存在负权环。 负权环是指一个至少包含一条边的有向环，其环上所有边的边权之和严格小于 (0)。自环也被视为环。负权环可以 ...

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NPTEL released the July-December 2026 semester results for various diploma programs. The NPTEL results have been released online on the official website of NPTEL- nptel.ac.in. Here we are also ...

One morning isn't a benchmark, but it was enough to change my default.

Apple has also opened a developer preview that lets third-party apps connect their content and actions to Siri AI. This should eventually allow Siri to carry out more tasks in supported apps, but ...