rm: cannot remove `test_*': No such file or directory
borisko with -O3

real    0m0.057s
user    0m0.012s
sys     0m0.044s

real    0m0.070s
user    0m0.012s
sys     0m0.057s

real    0m0.054s
user    0m0.008s
sys     0m0.046s

real    0m0.054s
user    0m0.012s
sys     0m0.041s

real    0m0.054s
user    0m0.013s
sys     0m0.040s

puzzle with -O3

real    0m0.128s
user    0m0.082s
sys     0m0.047s

real    0m0.128s
user    0m0.079s
sys     0m0.048s

real    0m0.128s
user    0m0.081s
sys     0m0.046s

real    0m0.128s
user    0m0.082s
sys     0m0.045s

real    0m0.127s
user    0m0.083s
sys     0m0.045s

borisko

real    0m0.645s
user    0m0.595s
sys     0m0.049s

real    0m0.837s
user    0m0.778s
sys     0m0.058s

real    0m0.660s
user    0m0.614s
sys     0m0.046s

real    0m0.646s
user    0m0.596s
sys     0m0.049s

real    0m0.642s
user    0m0.600s
sys     0m0.041s

puzzle

real    0m0.647s
user    0m0.606s
sys     0m0.041s

real    0m0.647s
user    0m0.599s
sys     0m0.047s

real    0m0.647s
user    0m0.606s
sys     0m0.040s

real    0m0.647s
user    0m0.604s
sys     0m0.043s

real    0m0.647s
user    0m0.608s
sys     0m0.038s