#include <iostream>
using namespace std;

int main() {
	int a, b;
	int count = 0;
	int aa[101], bb[101];
	cin >> a;
	for (int i = 0; i < a; i++) {
		cin >> aa[i];
	}
	cin >> b;
	for (int i = 0; i < b; i++) {
		cin >> bb[i];
	}
	int n;
	cin >> n;
	int i = 0, j = 0;
	int sum = 0;
	while (i < a && j < b && count < n) {
		if (aa[i] < bb[j]) {
			sum = sum + aa[i] + bb[j];
			count++;
			j++;
		}//比较两个数组元素大小，使大的元素所在数组下标+1，小的元素所在数组下标不变
		else if (aa[i] > bb[j]) {
			sum = sum + bb[j] + aa[i];
			count++;
			i++;
		}
		else {
			if (aa[i + 1] <= bb[j + 1]) {
				sum = sum + aa[i] + bb[j];
				count++;
				i++;
			}//如果两个元素相等，则比较两个数组下一个元素大小，使小的元素所在数组下标+1，大的元素所在数组下标不变
			else{
				sum = sum + bb[j] + aa[i];
				count++;
				j++;
			}
		}
	}
	cout << sum << endl;
	return 0;	
}