#include<stdio.h>
void removeDuplicates(int arr[], int n){
    if (n <= 0) return ;
    printf("%d", arr[0]);
    for (int i =1; i < n; i++) {
        int isDuplicate = 0;
        for (int j = 0; j < i; j++) {
            if (arr[i] == arr[j]){
                isDuplicate = 1;
                break;
            }
        }
        if (!isDuplicate){
            printf(" %d",arr[i]);
        }
    }
    printf("\n");
    
    if (n < 0) {
        printf("Invalide input\n");
    }else{
        int arr[n];
        for (int i = 0; i < n; i++){
            scanf("%d",&arr[i]);
        }
        removeDuplicates(arr,n);
    }
    return 0;
}