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100 Lines, 30 Questions
Benchmark: timing 100000 iterations of test_jcwren, test_lucs, test_lu
+csjcwren, test_lucsjcwren2...
...
       test_lucs: 291 wallclock secs (168.96 usr +  0.12 sys = 169.08 
+CPU)
 test_lucsjcwren: 277 wallclock secs (162.44 usr +  0.04 sys = 162.48 
+CPU)
test_lucsjcwren2: 267 wallclock secs (154.43 usr +  0.11 sys = 154.54 
+CPU)

#!/usr/local/bin/perl -w

...

   print "\n  Scale: #=$scale\n\n" if $scale > 1;
}