/// [A][M][C][B][N] ///
#include <bits/stdc++.h>
const int mod = 1e9 + 7;
const int inf = 0x3f3f3f3f;
const char sp = ' ', nl = '\n';
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    fin >> n;
    vector<int> v(n);
    for (auto& x : v) {
        fin >> x;
    }
    sort(v.begin(), v.end());
    for (auto& x : v) {
        fout << x;
    }
}