>272
cygwinなんだが...
CPUはAthlon1.1G

ちなみにgccだと
bash-2.05a$ gcc -O2 main.c
bash-2.05a$ time ./a.exe
real 0m1.422s
user 0m0.170s
sys 0m0.200s

やっぱruby最速(藁