void main()
{
	int a,b;
	scanf("%d%d",&a,&b);
	int i,j;
	int s1[1000],s2[1000];
	for(i=1;i<=a;i++)
		scanf("%d",&s1[i]);
	for(i=1;i<=b;i++)
		scanf("%d",&s2[i]);
	for(i=1;i<=a-1;i++)
		for(j=1;j<=a-i;j++)
			if(s1[j]>s1[j+1])
			{
				int t;
				t=s1[j];
				s1[j]=s1[j+1];
				s1[j+1]=t;
			}
	for(i=1;i<=b-1;i++)
		for(j=1;j<=b-i;j++)
			if(s2[j]>s2[j+1])
			{
				int t;
				t=s2[j];
				s2[j]=s2[j+1];
				s2[j+1]=t;
			}
	for(i=1;i<=a;i++)
		printf("%d ",s1[i]);
	for(i=1;i<=b-1;i++)
		printf("%d ",s2[i]);
	printf("%d",s2[b]);
}

