r=0r1=1c=0c1=1for i in (r,r1,1): for j in (c,c1,1): print((i,j))
Standard input is empty
(0, 0) (0, 1) (0, 1) (1, 0) (1, 1) (1, 1) (1, 0) (1, 1) (1, 1)
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