/*
The first version of this program had a bug:
it used realloc(x,...) 
where it should have used realloc(x,...*sizeof(int)).
*/

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
  int *x = 0;
  int xspace = 0;
  int xlen = 0;
  int n;

  while (scanf("%d",&n) == 1) {
    if (xlen == xspace)
      if (!(x = realloc(x,(xspace = xspace * 2 + 1) * sizeof(int)))) {
        fprintf(stderr,"out of memory\n");
        return 111;
      }
    x[xlen++] = n;
  }

  for (n = 0;n < xlen;++n)
    if (x[n] < 0)
      printf("%d\n",x[n]);
  for (n = 0;n < xlen;++n)
    if (x[n] > 0)
      printf("%d\n",x[n]);
  return 0;
}