Climbing Route Climbing Route
Moderate
English

You have an elevation map and you want to know the shortest climbing route.

The map is given as a list of strings.

  • 0 : plain ( elevation is 0)
  • 1-9 : hill (number is elevation)

"mountain" is adjacent (only 4 directions) hill group.

  • It consists of two or more hills.
  • Isolated hill is not mountain.

Start is top-left. Goal is bottom-right....

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