Doubt in Output

#1

For n = 2 , how are we getting this output?

{0-0} {0-1} {0-0} {1-0} {0-0} {1-1} {0-1} {1-0} {0-1} {1-1} {1-0} {1-1}
6

#2

input 2 means we have 2X2 chess board
we have to place 2 knight in it
possible answers are
{0-0} {0-1} {0-0} {1-0} {0-0} {1-1} {0-1} {1-0} {0-1} {1-1} {1-0} {1-1}
these are the position of knight (0,0) means top-left (0,1) means top right

these are the possible positions of knight

image
image1103×671 59.1 KB

i hope you understood it now
if not feel free to ask

#3

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