#include <bits/stdc++.h>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

struct nod{
    int val;
    nod *st;
    nod *dr;
};

int n;
int x;
nod *rez;

void insereaza(nod *&rez, int x)
{
    if(rez == NULL)
    {
        rez = new nod;
        rez->val = x;
        rez->st = rez->dr = NULL;
    }
    else
    {
        if(x > rez->val)
            insereaza(rez->dr, x);
        else
            insereaza(rez->st, x);
    }
}

void afiseaza(nod *&rez)
{
    if(rez != NULL)
    {
        afiseaza(rez->st);
        fout << rez->val << ' ';
        afiseaza(rez->dr);
    }
}

int main()
{
    fin >> n;
    for(int i=1; i<=n; i++)
        fin >> x, insereaza(rez, x);
    cout << rez->val;
    afiseaza(rez);
    return 0;
}