#include <stdio.h>
int main() {
int n = 0;
scanf("%d", &n);
int arr[1000] = { 0 };
int brr[1000] = { 0 };
int i = 0;
int j = 0;
int t = 0;
for (i = 0; i < n; i++)
{
scanf("%d", &arr[i]);
}
for (i = 0; i < n; i++)
{
for ( j = 0; j < i; j++)
{
if (arr[i] == arr[j])
break;
}
if (j ==i)
{
brr[t] = arr[i];
t++;
}
}
//printf("%d\n", t);
for (int i = 0; i < t; i++)
{
printf("%d ", brr[i]);
}
return 0;
}

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