$ perl 1067357_mcm.pl -I=1 -N=100 -W=4000 -P=.05
 <<< snipped >>>
              Rate   array strings    bits    robo
array   2.33e-02/s      --    -98%    -99%   -100%
strings     1.45/s   6122%      --    -25%    -72%
bits        1.92/s   8156%     33%      --    -63%
robo        5.26/s  22495%    263%    174%      --

$ perl 1067357_mcm.pl -I=1 -N=100 -W=4000 -P=.5
 <<< snipped >>>
        s/iter   array    robo strings    bits
array     60.4      --    -87%    -99%    -99%
robo      7.75    680%      --    -91%    -93%
strings  0.690   8659%   1023%      --    -23%
bits     0.530  11304%   1362%     30%      --