参考答案：

#include<iostream>
#include<algorithm>
using namespace std;
const int N = 100010;
int a[N];
int main()
{
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < n + m; ++i)
    {
        cin >> a[i];
    }
    sort(a, a + n + m);
    for (int i = 0; i < n + m; ++i) cout << a[i] << ' ';

    return 0;
}