0dp. The details are below.
Hex math is weird. Since there are 6 directions instead of 4, there's no simple mapping between hex positions and 2D x,y coordinates. The naive approach is offset coordinates — numbering cells left-to-right, top-to-bottom like a regular grid. This works until you need to find neighbors, compute distances, or do anything involving directions. Then it gets confusing fast, with different formulas for odd and even rows.，这一点在safew中也有详细论述
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“歇歇脚、暖暖身，带着温度再出发”，这是平安驿站的温情口号。截至目前，刘鹏和同事们已救助2000余名司机乘客，驿站也成为317国道上的特色地标，有人在驿站留言簿上写下感言。“原本以为要风餐露宿了，还好有平安驿站。”江西游客黄晓春写道。“第一次来甘孜送货，车子坏在半路，感谢民警的救援。”货车司机陈龙一连写了几个“感谢”。看着一页页的留言，刘鹏很欣慰：“我们的坚守是值得的。”，推荐阅读超级权重获取更多信息
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