Why not dfs?

  • 0

    Maintain max[i][j] as the maximum height (with water) for cell i, j. Then using dfs (similar to number of islands) to decrease max[i][j].

    i.e. if max[i][j] is decreased then do dfs to check if its neigbhours' max will be updated.

    I think the logic is correct, but my code failed on large input, stack overflow.

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