import java.util.*;
import java.util.Map.Entry;

import javax.swing.text.Segment;
import javax.xml.ws.WebEndpoint;

import java.io.*;
import java.lang.reflect.Array;
import java.math.BigInteger;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
 
public class Main implements Runnable
{
//    static int dx[]={-1,0,1,0};
//    static int dy[]={0,-1,0,1};
    static long mod=1000000007;
    
    public static void main(String[] args) {        
        new Thread(null, new Main(), "", 200 * 1024 * 1024).start();        
    }
    
    static int r,rr,s;
    public void run() {
        Reader sc = new Reader(System.in);
        PrintWriter out=new PrintWriter(System.out);

        int n=sc.nextInt();
        int a[]=sc.nextIntArray(n);
        int b[]=sc.nextIntArray(n);
        int p[] = new int[n];
        boolean u[]=new boolean[n+1];
        r=0;rr=0;
        rep(1,0,p,u,a);
        s=0;
        rep(1,0,p,u,b);
    	out.println(abs(r-rr));
     	out.flush();
    }    

    
    static void rep(int x, int c, int d[], boolean u[], int p[]) {
    	if(c==d.length) {
    		int e=0;
    		s++;
    		for (int i = 0; i < p.length; i++) {
				if(p[i]==d[i])e++;
			}
    		if(e==p.length && r==0) r=s;
    		else if(e==p.length && rr==0)rr=s;
    	}
    	for (int i = 1; i <= d.length; i++) {
			if(u[i])continue;
    		d[c]=i;
			u[i]=true;
			rep(x+1, c+1, d, u, p);
			u[i]=false;
		}
    }
    
    static void ret(String ans) {
    	System.out.println(ans);
    	System.exit(0);
    }

    static void ret(long ans) {
    	System.out.println(ans);
    	System.exit(0);
    }
    
    static boolean validpos(int x,int y,int r, int c){
        return x<r && 0<=x && y<c && 0<=y;
    }

    static void db(Object... os){
        System.err.println(Arrays.deepToString(os));
    }
}

//class P {
//	int x,y; double d;
//	P(int  x, int y, double d) {
//	  this.x=x;
//	  this.y=y;
//	  this.d=d;
//	}
//}

//
//class P implements Comparable<P>{
//    int id,ds,p;
//    P(int id, int ds, int p) {
//    	this.id=id;
//    	this.ds=ds;
//    	this.p=p;
//    }
//
//    public int compareTo(P p){
//        return ds-p.ds;
//    }
//}

class Reader
{ 
    private BufferedReader x;
    private StringTokenizer st;
    
    public Reader(InputStream in)
    {
        x = new BufferedReader(new InputStreamReader(in));
        st = null;
    }
    public String nextString()
    {
        while( st==null || !st.hasMoreTokens() )
			try {
				st = new StringTokenizer(x.readLine());
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        return st.nextToken();
    }
    public int nextInt()
    {
        return Integer.parseInt(nextString());
    }
    public int[] nextIntArray(int size) {
        int r[] = new int[size];
        for (int i = 0; i < size; i++) {
            r[i] = this.nextInt(); 
        }
        return r;
    }
    public long[] nextLongArray(int size) {
        long r[] = new long[size];
        for (int i = 0; i < size; i++) {
            r[i] = this.nextLong(); 
        }
        return r;
    }
    public char[] getCharSet() {
        return this.nextString().toCharArray();
    }    
    public long nextLong()
    {
        return Long.parseLong(nextString());
    }
    public double nextDouble() throws IOException
    {
        return Double.parseDouble(nextString());
    }
}


Measured memory_bytes: 23252