#include <stdio.h>

int main() {
    int n = 0;
    scanf("%d", &n);
    int arr[1000] = { 0 };
    int brr[1000] = { 0 };
    int i = 0;
    int j = 0;
    int t = 0;
    for (i = 0; i < n; i++)
    {
        scanf("%d", &arr[i]);
    }
    for (i = 0; i < n; i++)
    {
        for ( j = 0; j < i; j++)
        {
            if (arr[i] == arr[j])
                break;
        }
        if (j ==i)
        {
            brr[t] = arr[i];
            t++;
        }
    }
    //printf("%d\n", t);
    for (int i = 0; i < t; i++)
    {
        printf("%d ", brr[i]);
    }
    return 0;
}