#include<stdio.h>
void mergeArrays(int *a1,int n1,int *a2,int n2,int *merged)
{
    int i=0,j=0,k=0;
    while(i< n1 && j < n2)
    {
        if(*(a1 + i) <= *(a2 + j))
        {
            *(merged + k++) = *(a1 + i++);
        }
        else
        {
            *(merged + k++) = *(a2 + j++);
        }
    }
    while(i < n1)
    {
        *(merged + k++) = *(a1 + i++);
    }
    while(j < n2)
    {
        *(merged + k++) = *(a2 + j++);
    }
}
int main()
{
    int n1,n2;
    scanf("%d",&n1);
    if(n1 <= 0)
    {
        printf("Invalid input");
        return 0;
    }
    int arr1[n1];
    for(int i = 0;i<n;i++)
    {
        scanf("%d",arr1 + i);
    }
    scanf("%d",arr2+i);
    if(n2 <= 0)
    {
        printf("Invalid input");
        return 0;
    }
    int arr2[n2];
    for(int i =0;i<n2;i++)
    {
        scanf("%d",arr2 + i);
    }
    int merged[n1+n2];
    mergeArrays(arr1,n1,arr2,n2,mmerged);
    for(int i =0;i< n1 + n2;i++)
    {
        printf("%d",merged[i]);
    }
    return 0;
}