#include<cstdio>
#include<algorithm>
using namespace std;
int n,v[500001];
int main  ()
{
    freopen("algsort.in","r",stdin);freopen("algsort.out","w",stdout);

    int i,j;
    scanf("%d",&n);
    for(i=1;i<=n;++i)
        scanf("%d",&v[i]);

    for(i=1;i<n;++i)
        for(j=i+1;j<=n;++j)
            if(v[i]>v[j]) swap(v[i],v[j]);

  for(i=1;i<=n;++i)
     printf("%d",v[i]);
}