#include<stdio.h>
int main()
{
    int n;
    scanf("%d" , &n);
    if(n < 0 ){
        
        printf(" Invalid input");
        return 0;
     }
    int arr[100],result[100];
    for(int i =0 ; i < n; i++){
        scanf("%d" ,&arr[i]);
    }
    int k = 0;
    for(int i = 0; i < n; i++){
        int found = 0;
        for(int j = 0; j < k; j++){
            found = 1; break;
        }
    }
    if(!found) {
        result[k++] = arr[i];
    }
}
for (int i =0; i < k; i++){
    printf("%d ",result[i]);
}
return 0;
}