#include<stdio.h>
#include<stdlib.h>
int compare (const void * a, const void * b)
{
  return ( *(int*)a - *(int*)b );
}
int main()
{
    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);
int v[500010],n;
scanf("%d",&n);
for(int i=1;i<=n;i++)
scanf("%d",&v[i]);
qsort(v,n+1,sizeof(int),compare);
for(int i=1;i<=n;i++)
printf("%d",v[i]);
return 0;
}