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

#define N 1000   //双指针思想
int main(int argc, char *argv[])
{
  int n;
  int s[N];
  scanf("%d",&n);
  for(int i = 0 ; i < n ; i++)
    scanf("%d",&s[i]);
  int j = 0;              
  for(int i = 0 ; i < n ; i++) 
  {
     if(s[i] != 0 )    
      {
        int t = s[j];
          s[j++] = s[i];
          s[i] = t;
      }
  }
  for(int i = 0 ; i < n ; i++)
   printf("%d ",s[i]);
  return 0;
}