abowley@lave:~$ ./lowest.pl
Benchmark: running Method 1, Method 2, each for at least 20 CPU seconds...
  Method 1: 25 wallclock secs (19.80 usr +  0.21 sys = 20.01 CPU) @ 42.53/s (n=851)
  Method 2: 25 wallclock secs (20.33 usr +  0.22 sys = 20.55 CPU) @ 43.16/s (n=887)