#include <iostream>
using namespace std;
int main() {
int x , y ;
int a[100] , b[100] , c[100] ;
int i , j , k , m ;
cin >> x >> y ;
for ( int i = 0; i<=x ; i++){
cin >> a[i];
}
for ( int j = 0; j<=y ; j++){
cin >> b[j];
}
i = 1;
j = 1;
k = 1;
while ((i <= x) and (j <= y)) {
if ((i<=x) and (j<=y)){
if (a[i]<b[j]){
c[k] = a[i];
i++;
k++;
}
else{
c[k] = b[j];
j++;
k++;
}
}
else if (j>y){
c[k] = b[j];
j++;
k++;
}
}
for (int i =0; i<=(x+y);i++){
cout << c[i] << endl ;
}
return 0;
}