d=2**input()+1 x=411718%(d+752) W=-89139139%x g=(~-W*[' ']+['\n'])*53 for n in range(d):g[x]='*';d+=cmp((n&-n)*2&n,1);x+=(1,W,-1,-W)[d%4] print''.join(g)
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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