March 11, 2026 at 10:04 a.m. PT
function sumTreeIterative(tree: BinaryTree): number {
。关于这个话题，新收录的资料提供了深入分析
These aren't contrived scenarios invented by test authors in total vacuum. They're consequences of the spec's design and reflect real world bugs.
The U.S. is a net exporter of oil, but that does not mean it is immune to increases in the price of oil or gasoline, or that its producers can just make up the difference.