#include <iostream>
using namespace std;
int main(){
int n;
float v[100];
//Citire date
cin >> n;
for(int i=0;i<n;i++) cin >> v[i];
//Bubble Sort
bool ok=1;
while(ok){
ok=0;
for(int i=0;i<n-1;i++)
if(v[i]<v[i+1]){
swap(v[i],v[i+1]);
ok=1;
}
}
//Afisare vector
for(int i=0;i<n;i++) cout << v[i];
}