This concept is different from the Z-shaped foldable phone it showed last year. Instead, it folds twice to the center, like the Samsung Trifold, with the outside screen on one of the wings. But the other concept was the one that caught my attention: a magnetic modular phone.
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.
。PDF资料是该领域的重要参考
Названо число отправившихся на СВО фигурантов уголовных дел15:00。91视频对此有专业解读
就在这几天，App Store 的排行榜又发生了一些变化，没有模型更新和发布会，Claude 就这样突然冲到了应用商店的榜首。
Трамп высказался о непростом решении по Ирану09:14