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