#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

void joinAndSort(vector<int> arr1, vector<int> arr2) {
    vector<int> result = arr1;

    result.insert(result.end(), arr2.begin(), arr2.end());
    sort(result.begin(), result.end());

    for (int num : result)
        cout << num << " ";
    cout << endl;
}

int main() {
    vector<int> arr1 = {8, 2, 6, 4};
    vector<int> arr2 = {9, 1, 5, 3, 7};

    joinAndSort(arr1, arr2);
    return 0;
}