p=' ' t=eval("[p]*201,"*30) y=20;x=-1 for e in raw_input():y-=cmp(e,p);x+=1;t[y][x]=p=e for r in t: e=`r`[2::5].rstrip() if e:print e
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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