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