#include<iostream>
#include<cstdio>
using namespace std;
int a[32777]={0};
int main()
{
    int n,x,first=1;
    cin>>n;
    for(int i=1;i<=n;i++) {cin>>x;a[x]++;}
    for(int i=0;i<=32767;i++)
    if(a[i]>=1) a[i]=1;
    for(int i=0;i<=32767;i++)
        if(a[i]==1)
        {
            if(first) first=0;else cout<<" ";
            cout<<i;
        }
    return 0;
}
/**************************************************************
	Problem: 2098
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:25 ms
	Memory:2200 kb
****************************************************************/