The complexity of determining the minimum number of flips that transform one triangulation of a convex point set into another remained a tantalizing open question for many decades. We settle this question by proving that computing shortest flip sequences between triangulations of convex polygons, and therefore also computing the rotation distance of binary trees, is NP-hard.
For the same reason, I could not take avail of the BasBolt compiler explorer by Joe Antoon, which mimics the more famous C++ variant by Matt Godbolt and allows to interactively compile a BASIC program via various compilers. Although the readme suggests that QB30 is supported, the source code seems to only expect to use QB40 or QB45 as backends. The critical point is that the system relies on the /a compiler option, which produces a commented binary but was not yet available in QB30. Pity, but otherwise the project is very interesting!，更多细节参见快连下载安装
。51吃瓜对此有专业解读
Alternate syntax ideas。clash下载 - clash官方网站是该领域的重要参考
Использование Ираном недорогих дронов ставит Соединенные Штаты и их союзников в экономически невыгодное положение, когда стоимость защиты многократно превышает цену атаки. Об этом пишет американская газета The New York Times (NYT).