s='' while 1:r=raw_input(s);i=0;s='';exec"for c in r:x=c>'(';s+=c*(x==i)or' ';i-=x*2-1\ns=s.strip()+'\\n';i-=1\n"*9
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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