# I have pyston_lite_autoload installed already. It can be disabled.
$ DISABLE_PYSTON=1 python3 llil2.py big1.txt big2.txt big3.txt > out1.txt
collect time         :    5.1 s
sort+format time     :    3.6 s
total processing time:    8.7 s
output time          :    3.6 s
total time           :   12.2 s