#include<cstdio>
#include<set>

using namespace std;

set <int> S;

int main() {
	freopen("algsort.in","r",stdin);
	freopen("algsort.out","w",stdout);
	
	int N, val;
	set <int> :: iterator it;
	
	scanf("%d",&N);
	while(N--) {
		scanf("%d",&val);
		S.insert(val);
	}
	
	for(it=S.begin(); it!=S.end(); it++)
		printf("%d ",*it);
	printf("\n");
	
	return 0;
}