#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    if(n<0)
    {
        printf("Invalid input");
        return 0;
    }
    int arr[n];
    for (int i=0;i<n;i++);
    {
       scanf("%d",&arr[i]);
    }
    for (int i=0;i<n;i++)
    {
         int isDuplicate = 0;
         for (int j = 0;j < i; j++)
         {
             if(arr[i] == arr[j])
             {
                 isDuplicate=1;
                 break;
             }
         }
         if (isDuplicate == 0)
         {
             printf("%d ", arr[i]);
         }
    }
    
}