ss

#include<bits/stdc++.h>
using namespace std;
int cmp(int a,int b){
    return a<b;
}
int main(){
    int n,m;
    cin >> n >> m;
    int a[10005],b[10005];
    for(int i=0;i<n;i++) cin >> a[i];
    for(int i=0;i<m;i++) cin >> b[i];
    int i=0,j=0;
    a[n] = 1e9;
    b[m] = 1e9;
    while(i<n||j<m){
        if(a[i] < b[j]){
            cout << a[i] << " ";
            i++;
        }else if(b[j] < a[i]){
            cout << b[j] << " ";
            j++;
        }else{
            cout << a[i] << " " << b[j] << " ";
            i++; j++;
        }
    }
    return 0;
}