void removeDuplicates(int arr[], int size){
    if (size < 0){
        printf("Invalid input\n");
        return;
    }
    
    
    for (int i = 0; i < size - 1; i++) {
        for (int j = i + 1; j < size; j++) {
            if (arr[i] > arr[j]) {
                int temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }
    
    if (size > 0) printf("%d", arr[0]);
    for (int i = 1; i < size; i++) {
        if (arr[i] != arr[i - 1]) {
            printf(" %d", arr[i]);
            
        }
    }
    printf("\n");
}

int main() {
    int n;
    scanf("%d",&n);
    
    int arr[n];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
        
    }
    
    removeDuplicates(arr, n);
    return 0;
    
}
}