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:
这五年，河湖复苏见证生态蝶变。断流百年的京杭大运河连续4年全线水流贯通，断流二十六载的永定河碧波荡漾。越来越多的幸福河湖，正在成为百姓家门口的“诗和远方”。，详情可参考搜狗输入法2026
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04，这一点在im钱包官方下载中也有详细论述
It was Nasa's most dangerous mission yet.