#include <iostream>
#include<fstream>
using namespace std;
int main()
{
ifstream in("algsort.in");
ofstream out("algsort.out");
int n,i,v[99999999],j,aux;
in>>n;
for(i=1;i<=n;i++)
{
    in>>v[i];
}
cout<<n;
for(i=1;i<=n-1;i++)
    for(j=i+1;j<=n;j++)
    {
        if(v[i]>v[j])
        {
            aux=v[i];
            v[i]=v[j];
            v[j]=aux;
        }
    }

for(i=1;i<=n;i++)
{
    out<<v[i];
}
return 0;
}