class Solution: def shortestPath(self, grid: List[List[int]], k: int) -> int: m = len(grid) n = len(grid[0]) poss = set([(0, 0, k - grid[0][0], 0)]) visited = set() while poss: for x, y, _k, step in poss: if x == m - 1 and y == n - 1 and _k ...
Shortest Path to Get Food 参考资料: https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/ https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/discuss/712992/C%2B%2B-or-BFS https://leetcode.com/problems/shortest-path-in-a-grid-with-o...
This is graph and look for the shortest path, so BFS should be solution. But how to handle K? We can look K as a parameter of every node. My first solution use two Queues to solve it, one for node in grid, another one for remain number of nodes that can be removed. But later ...
LeetCode 1293. Shortest Path in a Grid with Obstacles Elimination 2019-12-16 16:24 −[题目](https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/) 非常简单的BFS 暴搜 ``` struct Node { int x; int y; int k; int... ...
precision of grid map sizes, and to escape the uncertainty in solving by intelligent algorithms, this paper designs a method for obtaining an adjacency matrix based on node planning of shortest path diagrams with polygonal obstacles and then uses the Dijkstra algorithm to get the shortest path. Fo...
precision of grid map sizes, and to escape the uncertainty in solving by intelligent algorithms, this paper designs a method for obtaining an adjacency matrix based on node planning of shortest path diagrams with polygonal obstacles and then uses the Dijkstra algorithm to get the...
grid count methodfaster R-CNNVGGNet-16An improved version of Alpha-N, a self-powered, wheel-driven Automated Delivery Robot (ADR), is presented in this study. Alpha-N V2 is capable of navigating autonomously by detecting and avoiding objects or obstacles in its path. For autonomous navigation...
To address such path-planning of drones, the bird's-eye view of the whole landscape is first transformed into a graph of grid cells, where some are occupied to indicate the obstacles and some are free to indicate the free path. We propose a method to find out the shortest obstacle-free...
Given a rectilinear domain $\mathcal{P}$ of $h$ pairwise-disjoint rectilinear obstacles with a total of $n$ vertices in the plane, we study the problem of computing bicriteria rectilinear shortest paths between two points $s$ and $t$ in $\mathcal{P}$. Three types of bicriteria rectil...
grid[0][0] == grid[m-1][n-1] == 0 题解: Use BFS to track the shortest path. In queue, we need coordinate and current count of obstacles eliminated. For the polled coordinate, if it is the lower right corner, then return the BFS level as step. ...