#include <stdio.h>
#include <stdlib.h>

int main() {
    int n;
    scanf("%d", &n);
    
    if (n <= 0) {
        printf("Invalid input\n");
        return 0;
    }
    int *arr = (int *)malloc(n * sizeof(int));
    if (arr == NULL) {
        printf("Memory allocation failed\n")
        return 1;
    }
    
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);    
    }
    
    for (int i = 0; i < n; i++) {
        int is_duplicate = 0;
        for (int j = 0; j < 1; j++) {
            if (arr[i] == arr[j]) {
                is_duplicate = 1;
                break;
            }
        }
        if (!is_duplicate) {
            printf("%d ", arr[i]);
        }
    }
    printf("\n");
    
    free(arr);
    return 0;
}