q='''$q=.0;
if( defined($x) )
{
   print (("Bash", "Python", "Ruby")[$x], "\n");
}
else
{
   print "Perl\n";
}
__DATA__ '+%{
echo "\$x=0;$q" | perl
exit 0
'''
import subprocess
child = subprocess.Popen("perl", stdin=subprocess.PIPE)
child.stdin.write('$x=1;' + q[3:])
child.wait()
'''}; IO.popen("perl", "w") {|io| io.write('$x=2;' + q[3..-1]); io.close_write }
unused_data = %{
UNUSED DATA }#'''