import java.io.BufferedInputStream;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
    static int N = 25;
    static int s1,s2,s3,s4;
    static int[] A = new int[N];
    static int[] B = new int[N];
    static int[] C = new int[N];
    static int[] D = new int[N];
    public static void main(String[] args){
        Scanner sc = new Scanner(new BufferedInputStream(System.in));
        s1 = sc.nextInt();
        s2 = sc.nextInt();
        s3 = sc.nextInt();
        s4 = sc.nextInt();
        int ans = 0;
        for(int i = 0;i < s1;i ++)
            A[i] = sc.nextInt();
        Arrays.sort(A,0,s1);
        // 贪心依次枚举
        for(int i = s1 - 1;i >= 0;i --){
            if(A[i] > 0){
                ans += A[i];
                if(i - 1 >= 0)
                    A[i - 1] -= A[i];
            }else if(A[i] < 0){
                if(i - 1 >= 0)
                    A[i - 1] -= Math.abs(A[i]);
            }
        }
        for(int i = 0;i < s2;i ++)
            B[i] = sc.nextInt();
        Arrays.sort(B,0,s2);
        for(int i = s2 - 1;i >= 0;i --){
            if(B[i] > 0){
                ans += B[i];
                if(i - 1 >= 0)
                    B[i - 1] -= B[i];
            }else if(B[i] < 0){
                if(i - 1 >= 0)
                    B[i - 1] -= Math.abs(B[i]);
            }
        }
        for(int i = 0;i < s3;i ++)
            C[i] = sc.nextInt();
        Arrays.sort(C,0,s3);
        for(int i = s3 - 1;i >= 0;i --){
            if(C[i] > 0){
                ans += C[i];
                if(i - 1 >= 0)
                    C[i - 1] -= C[i];
            }else if(C[i] < 0){
                if(i - 1 >= 0)
                    C[i - 1] -= Math.abs(C[i]);
            }
        }
        for(int i = 0;i < s4;i ++)
            D[i] = sc.nextInt();
        Arrays.sort(B,0,s4);
        for(int i = s4 - 1;i >= 0;i --){
            if(D[i] > 0){
                ans += D[i];
                if(i - 1 >= 0)
                    D[i - 1] -= D[i];
            }else if(D[i] < 0){
                if(i - 1 >= 0)
                    D[i - 1] -= Math.abs(D[i]);
            }
        }
        System.out.println(ans);
    }
}