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/*Calculate the value of PI.  Takes a long time!*/

#ifndef WIN32

int InitStack[128];  //used by boot.asm

void putchar(char ch)

{

   *(int*)0x20000000 = ch;

}

void OS_InterruptServiceRoutine(unsigned int status)

{

   (void)status;

}

#endif

void print_num(unsigned long num)

{

   unsigned long digit,offset;

   for(offset=1000;offset;offset/=10) {

      digit=num/offset;

      putchar(digit+'0');

      num-=digit*offset;

   }

}

long a=10000,b,c=56,d,e,f[57],g;

int main()

{

   long a5=a/5;

   for(;b-c;) f[b++]=a5;

   for(;d=0,g=c*2;c-=14,print_num(e+d/a),e=d%a)for(b=c;d+=f[b]*a,

     f[b]=d%--g,d/=g--,--b;d*=b);

   putchar('\n');

   return 0;

}