#include<stdio.h>
#include<ctype.h>
#include<string.h>

int isInteger(char *s)
{
    int i = 0;
    if (s[0] == '-' || s[0] == '+')i++;
    if (s[i] == '\0') return 0;
    for (; s[i]; i++)
    {
      if(!isdigit(s[i])) return 0;
    }
    return 1;
}
int main()
{
    int n;
    char buff[50];
    
    if (!fgets(buff, sizeof(buff)stdin) || !isInteger(buff))
    {
        printf("Invalid input");
        return o;
    }
    n= atoi(buff);
    
    int arr[n], count = 0;
    for(int i = 0;i<n;i++)
    {
      if (!fgets(buff,sizeof(buff),stdin) || !isInteger(buff))
      {
        printf("Invalid input");
        return 0;
      }
      int val= atoi(buff);
      if (val %2 ==0) arr[count++]=val;
    }
    
    if(count == 0)
    {
        printf("empty");
        return 0;
    } 
    for (int i=0;i<count;i++)
    {
        if(i) printf(" ");
        printf("%d", arr[i]);
    }
    return 0;
    }
}