Solution: Swim in Rising Water
Explore how to solve the Swim in Rising Water problem by applying a greedy, Dijkstra-like algorithm. This lesson teaches you to navigate a matrix grid where elevations represent water levels rising over time. Understand how to use a min heap for efficient traversal and how to determine the earliest time to reach the destination cell, deepening your skills in matrix operations and pathfinding techniques.
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Statement
Given an grid[i][j] represents the elevation at position (i, j).
Once it starts to rain, the water level rises over time. At any given time t, the water depth across the grid equals t. A swimmer can move from one cell to an adjacent cell (up, down, left, or right) if both cells have elevations less than or equal to the current water level t.
If the elevation condition ...