#include<bits/stdc++.h>
using namespace std;
int main()
{
srting str; // First, declare a string.
sort(str.begin() , str.end()); // Then sort it by using this method. It is much more convenient.
cout << str << endl; // Last of all, print out the string.
}
#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
string s;
cin>>s;
for(int i=0;i<n-1;i++){
for(int j=0;j<n-i-1;j++){
if(s[j]>s[j+1]) swap(s[j],s[j+1]);
}
}
cout<<s<<endl;
return 0;
}
#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
string s[n];
for (int i = 0; i < n; i++)
cin >> s[i];
for (int i = 0; i < n; i++)
for (int j = 0; j < n - 1; j++)
if (s[j] > s[j + 1])
swap(s[j], s[j + 1]);
for (int i = 0; i < n; i++)
cout << s[i] << endl;
return 0;
}