#include <stdio.h>   
#include <stdlib.h>   

int n, v[5010];

int cmp( const void*x, const void *y )
{
    return *(int*)x - *(int*)y;
}

int main()
{
    int i;

    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);

    scanf( "%d", &n );

    for(i=0;i<n;i++)
	scanf( "%d",v+i);

    qsort(v,n,sizeof(v[0]),cmp);

    for(i=0;i<n;i++)
	printf("%d",v[i]);
  
    return 0;   
}