i want to run my code on the following by speed up this is C programming

runtime on n=100000

faster than 10,000 milisecond

include include include include include #define nDEFAULT 100 #define LEN 1000000 123456 /when compiled with -01 optimization / 10000 312.8 msec 1 100000, 40478.3 msec static unsigned int factorial[LEN), len; static void calcfactorial(unsigned int n) { unsigned int carry, i, ji len = factorial[e] = 1; for (i = 1; i @; i--) printf("X10", factorialli 2)); printf(" "); static void printFoctoris (void) { int i; for (i = len; i > 0; i--) printf("%1d", factoriali - 1)); printf(" "); + make changes before this block * Do NOT change anything in main() ***** */ int main(int argc, char *argv[]) { int c, n = nDEFAULT, debug = @; struct timeval te, t1; float elapsed; while ((c = getopt(arge, argv, "d:n:")) != -1) { switch (c) { case d': sscanf(optarg,"%d", &debug); break; case 'n': sscanf (optarg, "%d", &n); break; default: break; } } if (n