I am getting runtime error on n=1000, m=1000 test cases. Unable to figure out why.
Sorry for messed up code.
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Storing the directions as a string (for each cell) is pretty costly, you might be running out of memory while doing that.
Thanks for Your time. But that should have resulted in MLE right ?
https://cses.fi/145/text/674/: According to this, CSES doesn't have an MLE verdict; rather it is shown as a runtime error.