添加图片注释，不超过 140 字（可选）
If the A* calculation for a shortcut (in Step 3) finds it's now impassable, or if its actual detailed cost is significantly different (e.g., 20%) from the pre-calculated shortcut value:
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The company said a key driver of the price change was "the adjustment between forecasted and actual costs of delivering gas to customers in Northern Ireland".。同城约会对此有专业解读
The US has authorised the departure of non-essential government workers and their families from Israel as the threat of an American strike on Iran looms.
复制生成的 Mermaid 代码块。