#include <stdio.h>
int main() {
    scanf("%d", &n);
    if (n < 0) {
        printf("Invalid input");
        return 0;
    }
    int arr[20];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }
    printf("Array after removing duplicates:\n");
    for (int i = 0;i < n; i++) {
        int duplicates = 0;
        for (int j = 0;j < i; j++) {
            if (arr[i] == arr[j]) {
                duplicate = 1;
                break;
            }
        }
        if (!duplicate)
        printf("%d ", arr[i]);
    }
    return 0;
}