mpneves@voyager perl$ ./test.pl
Persons: 1000000
Person2: 1000000

TIMES:
ab: 17.5640239715576
bc: 1.96199607849121
COUNTS:
ab: 1153
bc: 1153
mpneves@voyager perl$ ./test.pl
Persons: 1000000
Person2: 1000000

TIMES:
ab: 18.5665609836578
bc: 1.95595502853394
COUNTS:
ab: 1185
bc: 1185
mpneves@voyager perl$ ./test.pl
Persons: 1000000
Person2: 1000000

TIMES:
ab: 24.4221110343933
bc: 3.58428502082825
COUNTS:
ab: 1213
bc: 1213