$ time java-introcs Generate 16000000 2023 > 16000000.txt

real	0m30.253s
user	0m6.676s
sys	0m23.494s
$ time java-introcs FindGene - < 16000000.txt
249339

real	0m0.429s
user	0m0.459s
sys	0m0.052s
$ java-introcs FindGene - - < 16000000.txt
249339
Time to read data:   0.12
Time to count genes: 0.25
Total time:          0.37
$ rm 16000000.txt

$ time java-introcs Generate 32000000 2023 > 32000000.txt

real	0m58.511s
user	0m13.270s
sys	0m45.041s
$ time java-introcs FindGene - < 32000000.txt
500253

real	0m0.780s
user	0m0.771s
sys	0m0.104s
$ java-introcs FindGene - - < 32000000.txt
500253
Time to read data:   0.19
Time to count genes: 0.48
Total time:          0.68
$ rm 32000000.txt

$ time java-introcs Generate 64000000 2023 > 64000000.txt

real	2m0.334s
user	0m26.906s
sys	1m32.460s
$ time java-introcs FindGene - < 64000000.txt
999878

real	0m1.418s
user	0m1.397s
sys	0m0.146s
$ java-introcs FindGene - - < 64000000.txt
999878
Time to read data:   0.33
Time to count genes: 0.93
Total time:          1.27
$ rm 64000000.txt

$ time java-introcs Generate 128000000 2023 > 128000000.txt

real	4m23.432s
user	0m53.589s
sys	3m28.817s
$ time java-introcs FindGene - < 128000000.txt
2000109

real	0m2.605s
user	0m2.464s
sys	0m0.258s
$ java-introcs FindGene - - < 128000000.txt
2000109
Time to read data:   0.59
Time to count genes: 1.80
Total time:          2.39
$ rm 128000000.txt