After often years at sea, adult Atlantic salmon swim thousands of miles to return to the chalk streams where they were born.
Crucially, this distribution of border points is agnostic of routing speed profiles. It’s based only on whether a road is passable or not. This means the same set of clusters and border points can be used for all car routing profiles (default, shortest, fuel-efficient) and all bicycle profiles (default, prefer flat terrain, etc.). Only the travel time/cost values of the shortcuts between these points change based on the profile. This is a massive factor in keeping storage down – map data only increased by about 0.5% per profile to store this HH-Routing structure!
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异地过年、私厨上门、外卖配送……其实，年夜饭吃法早就不拘一格，预订餐厅年夜饭更是流行多年，今年却是我家第一次改革。