#include <stdio.h>
#include <assert.h>
typedef unsigned long int L;
typedef double D;
typedef int const b = 8;
L const ep = 0x0037400000000000L;
L gd;
L rdiv(L n, int k) {
  if(k==0) return n;
  int t = n>>48;
  L np = n - ((L)t<<48) + t*gd;
  return (t<<b) + rdiv(np<<b, k-1);
}
L div(L n, L d){
  assert (d < ep); gd=d;
  assert (n < (1L << (54+9)));
  return rdiv(n, 54/b);}



D divide(D a, D b){

int main(){
  printf("%016lx\n", div(1L<<62, 0x0036100000000000L));
  return 0;}