#include<fstream>
using namespace std;
int a[500002], n, i, aux, ok=0;
ifstream cin("algsort.in");
ofstream cout("algsort.out");
int main()
{
    cin>>n;
    for(i=1; i<=n; i++)
    {
        cin>>a[i];

    }

   while(ok=1)
    {
        for(i=1; i<=n; i++)
        {if(a[i]>a[i+1])
        aux=a[i];
        a[i]=a[i+1];
        a[i+1]=aux;

        }
    }
    for(i=1; i<=n; i++)
    {cout<<a[i];
    }
    cin.close();
    cout.close();
    return 0;
    }