#include<stdio.>

int main(){
    int n;
    scanf("%d", &n);
    if (n<0) {
        printf("invalid input");
        return 0;
    }
    int arr[n];
    for (int i=0; &arr[i]);
        scanf("%d", &arr[i]);
    }
    for (int i=0; i < n;i++) {
        for (int j = i + 1; j < n; ) {
            if (arr[i] == arr[j]) {
                for (int k = j; k < n -1; k++) {
                    arr[k] = arr[k + 1];
                }
                n--;
            } else {
                j++;
            }
        }
    }
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    
    return 0;
}