y=r=2**input() while y: y-=2;a=b=' '*y;x=r-y while x:x-=2;s=x&y and' '*8or'/__\\ /\\ ';a+=s[:4];b+=s[4:] print b[:-1]+'\n'+a

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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