Sergei-Levshnia/homework: Nix-study-course homeworks @ f23fbe976d58a976ee2ef3139850dffecc0da14f

miskson 890a8d0627 pow checks added to hw9. hw10 task started. table creation function, option select written		3 lat temu
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OOP-part	9e4e086054 file structure changed	3 lat temu
first-part	890a8d0627 pow checks added to hw9. hw10 task started. table creation function, option select written	3 lat temu