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Find Minimum Time to Reach Last Room I

There is a dungeon with n x m rooms arranged as a grid.

There is a dungeon with n x m rooms arranged as a grid.

You are given a 2D array moveTime of size n x m, where moveTime[i][j] represents the minimum time in seconds after which the room opens and can be moved to. You start from the room (0, 0) at time t = 0 and can move to an adjacent room. Moving between adjacent rooms takes exactly one second.

Return the minimum time to reach the room (n - 1, m - 1).

Two rooms are adjacent if they share a common wall, either horizontally or vertically.

Find Minimum Time to Reach Last Room I diagram

Example 1

Input: moveTime = [[0,4],[4,4]]

Output: 6

Explanation: The minimum time required is 6 seconds.

Example 2

Input: moveTime = [[0,0,0],[0,0,0]]

Output: 3

Explanation: The minimum time required is 3 seconds.

Example 3

Input: moveTime = [[0,1],[1,2]]

Output: 3

Constraints

  • 2 <= n == moveTime.length <= 50
  • 2 <= m == moveTime[i].length <= 50
  • 0 <= moveTime[i][j] <= 10^9

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