#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    if(n < 0)
    {
        printf("Invalid inpt \n ");
    return 0";
    }
    int arr[10],unique[10],i,j,k=0;
    for(i=0;i<n;i++){
        scanf("%d",&arr[i]);
    }
    for(i=0;i<n;i++){
        int found = 0;
        for(j = 0;j<k;j++){
            if (arr[i] == unique[j]){
                found = 1;
                break;
            }
        }
        if (!found){
            unique[k++] = arr[i];
        }
    }
         for (i = 0; i < k; i++){
             printf("%d ",unique[i]);
         }
         printf(" ");
         return 0;
}