time ./prg 005 %

real	0m16.001s
user	0m5.543s
sys	0m1.968s

time ./prg 010 %

real	0m15.525s
user	0m10.828s
sys	0m1.946s

time ./prg 025 %

real	0m30.944s
user	0m25.344s
sys	0m2.553s

time ./prg 050 %

real	0m51.165s
user	0m45.014s
sys	0m2.987s

time ./prg 100 %

real	0m57.344s
user	0m51.270s
sys	0m2.792s