Vasya follows a basketball game and marks the distances from which each team makes a throw. He knows that each successful throw has value of either 2 or 3 points. A throw is worth 2 points if the distance it was made from doesn't exceed some value of d meters, and a throw is worth 3 points if the distance is larger than d meters, where d is some non-negative integer.

Vasya would like the advantage of the points scored by the first team (the points of the first team minus the points of the second team) to be maximum. For that he can mentally choose the value of d. Help him to do that.

Input

The first line contains integer n (1 ≤ n ≤ 2·105) — the number of throws of the first team. Then follow n integer numbers — the distances of throws ai (1 ≤ ai ≤ 2·109). 

Then follows number m (1 ≤ m ≤ 2·105) — the number of the throws of the second team. Then follow m integer numbers — the distances of throws of bi (1 ≤ bi ≤ 2·109).

Output

Print two numbers in the format a:b — the score that is possible considering the problem conditions where the result of subtraction a - b is maximum. If there are several such scores, find the one in which number a is maximum.

Examples

Input

3
1 2 3
2
5 6


Output

9:6


Input

5
6 7 8 9 10
5
1 2 3 4 5


Output

15:10
import java.io.*;
import java.util.*;
import java.math.*;
import java.lang.*;

public class Main implements Runnable 
{
    static class InputReader 
    {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private SpaceCharFilter filter;
        private BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        public InputReader(InputStream stream) 
        {
            this.stream = stream;
        }
        
        public int read()
        {
            if (numChars==-1) 
                throw new InputMismatchException();
            
            if (curChar >= numChars) 
            {
                curChar = 0;
                try
                {
                    numChars = stream.read(buf);
                }
                catch (IOException e)
                {
                    throw new InputMismatchException();
                }
                
                if(numChars <= 0)               
                    return -1;
            }
            return buf[curChar++];
        }
    
        public String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }    
            return str;
        }
        public int nextInt() 
        {
            int c = read();
            
            while(isSpaceChar(c)) 
                c = read();
        
            int sgn = 1;
        
            if (c == '-') 
            {
                sgn = -1;
                c = read();
            }
            
            int res = 0;
            do
            {
                if(c<'0'||c>'9') 
                    throw new InputMismatchException();
                res *= 10;
                res += c - '0';
                c = read();
            }
            while (!isSpaceChar(c)); 
        
            return res * sgn;
        }
        
        public long nextLong() 
        {
            int c = read();
            while (isSpaceChar(c))
                c = read();
            int sgn = 1;
            if (c == '-')
            {
                sgn = -1;
                c = read();
            }
            long res = 0;
            
            do 
            {
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c - '0';
                c = read();
            }    
            while (!isSpaceChar(c));
                return res * sgn;
        }
        
        public double nextDouble() 
        {
            int c = read();
            while (isSpaceChar(c))
                c = read();
            int sgn = 1;
            if (c == '-')
            {
                sgn = -1;
                c = read();
            }
            double res = 0;
            while (!isSpaceChar(c) && c != '.') 
            {
                if (c == 'e' || c == 'E')
                    return res * Math.pow(10, nextInt());
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c - '0';
                c = read();
            }
            if (c == '.') 
            {
                c = read();
                double m = 1;
                while (!isSpaceChar(c))
                {
                    if (c == 'e' || c == 'E')
                        return res * Math.pow(10, nextInt());
                    if (c < '0' || c > '9')
                        throw new InputMismatchException();
                    m /= 10;
                    res += (c - '0') * m;
                    c = read();
                }
            }
            return res * sgn;
        }
    
        public String readString() 
        {
            int c = read();
            while (isSpaceChar(c))
                c = read();
            StringBuilder res = new StringBuilder();
            do 
            {
                res.appendCodePoint(c);
                c = read();
            } 
            while (!isSpaceChar(c));
            
            return res.toString();
        }
    
        public boolean isSpaceChar(int c) 
        {
            if (filter != null)
                return filter.isSpaceChar(c);
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
    
        public String next()
        {
            return readString();
        }
        
        public interface SpaceCharFilter
        {
            public boolean isSpaceChar(int ch);
        }
    }
    public static void main(String args[]) throws Exception 
    {
        new Thread(null, new Main(),"Main",1<<27).start();
    }
    
    static class Pair{
        int nod;
        int ucn;
        
        
        Pair(int nod,int ucn){
            this.nod=nod;
            this.ucn=ucn;
            
        }
        
        public static Comparator<Pair> wc = new Comparator<Pair>(){
            public int compare(Pair e1,Pair e2){
                
                //reverse order
                if(e1.ucn < e2.ucn) 
                    return 1;  // 1 for swaping.
                else if (e1.ucn > e2.ucn) 
                    return -1; 
                else{
                    // if(e1.siz>e2.siz)
                    //     return 1;
                    // else
                    //     return -1;
                    return 0;
                } 
            }
        };	
    }

    public static long gcd(long a,long b){
        if(b==0)return a;
        else return gcd(b,a%b);
    }


    ////recursive BFS
    public static int bfsr(int s,ArrayList<Integer>[] a,boolean[] b,int[] pre){
        b[s]=true;
        int p = 1;
        int n = pre.length -1;
        int t = a[s].size();
        int max = 1;
        for(int i=0;i<t;i++){
            int x = a[s].get(i);
            if(!b[x]){
                //dist[x] = dist[s] + 1;
                int xz =  (bfsr(x,a,b,pre));
                p+=xz;
                max = Math.max(xz,max);
            }
        }
        max = Math.max(max,(n-p));
        pre[s] = max;
        return p;
    }

//// iterative BFS
    public static int bfs(int s,ArrayList<Integer>[] a,int[] dist,boolean[] b,PrintWriter w){
        b[s]=true;
        int siz = 0;
        
        Queue<Integer> q = new LinkedList<>();
        q.add(s);
        while(q.size()!=0){
            int i=q.poll();
            Iterator<Integer> it = a[i].listIterator();
            int z=0;
            while(it.hasNext()){
                z=it.next();
                if(!b[z]){
                    b[z]=true;
                    dist[z] = dist[i] + 1;
                    siz++;
                    q.add(z);
                }
            }   
        
        }
        return siz;
    }

    public static int lower(int key, int[] a){
        int l = 0;
        int r = a.length-1;
        int res = 0;

        while(l<=r){
            int mid = (l+r)/2;

            if(a[mid]<=key){
                l = mid+1;
                res = mid+1;
            }
            else{
                r = mid -1;
            }
        }

        return res;
    }

    


//////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////


    public void run()
    {
        InputReader sc = new InputReader(System.in);
        PrintWriter w = new PrintWriter(System.out);
        int defaultValue=0;
        

        
        // int tc = sc.nextInt();
        // while(tc-->0){
            int n = sc.nextInt();
            int[] a = new int[n];
            HashSet<Integer> aa = new HashSet<Integer>();
            //ArrayList<Integer> aa = new ArrayList<Integer>();
            for(int i=0;i<n;i++){a[i] = sc.nextInt();aa.add(a[i]-1);aa.add(a[i]);aa.add(a[i]+1);}
            int m = sc.nextInt();
            int[] b = new int[m];
            for(int i=0;i<m;i++){b[i] = sc.nextInt();aa.add(b[i]-1);aa.add(b[i]);aa.add(b[i]+1);}

            Arrays.sort(a);
            Arrays.sort(b);
   
            
            int ans = Integer.MIN_VALUE;
            int x = -1;
            int y = -1;
            Iterator<Integer> it = aa.iterator();
            while(it.hasNext()){
                int i = it.next();
                int xx = -1;
                int yy = -1;
                int mid = lower(i,a);
                xx = (2*mid)+((n-mid)*3);
                mid = lower(i,b);
                yy = (2*mid)+((m-mid)*3);

                if((xx-yy)>ans){
                    ans = xx-yy;
                    x = xx;
                    y = yy;
                }
                else if((xx-yy)==ans && x<xx){
                    x = xx;y=yy;
                }

            }
            w.println(x+":"+y);

            
        
       //}
        w.flush();
        w.close();
    }

     
  
    

    
}

