Why k=5, holes are unavoidable? For what situation? Many case with k=5 can be filled without holes, such as m=5, n=5, k=5, you can just throw in five...
Actually, I should have added this to my original post. I saw posts here addressing pretty much similar question....
I have this problem and searched around and I find this interesting Tetris forum, so I registered and guess big shots here can help. The question...
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