Same version of perl

results:
Benchmark: timing 1000000 iterations of Grep, Max, Ternary...
      Grep:  5 wallclock secs ( 4.83 usr +  0.00 sys = 4.83 CPU)
       Max:  7 wallclock secs ( 6.77 usr +  0.01 sys = 6.78 CPU)
   Ternary:  7 wallclock secs ( 6.90 usr +  0.00 sys = 6.90 CPU)