Hi, so i've been trying to solve this problems with dfs, but it still gives me TLE and RE. Could someone please tell me what's wrong with my code ? My code
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If the problem is TLE, maybe you can try to use reference with your grid, or make it a global variable, else it would copy the whole gird every time you call the dfs function.
Yah seems like you are not passing the grid by reference.
A neater implementation trick: https://pastebin.com/9Ji9fMi3