/* package whatever; // don't place package name! */

import java.util.Scanner;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	Scanner scan = new Scanner(System.in);
    int size = scan.nextInt();
    long arr1[] = new long [size];
    long arr2[] = new long [size];
    for(int i = 0; i < size; i++){
        arr1[i] = scan.nextInt();
    }
    for(int i = 0; i < size; i++){
        arr2[i] = scan.nextInt();
    }
    long tmp = 0;
    for(int i = 0; i < size; i++){
        tmp+= Math.abs(arr2[i] - arr1[i]);
    }
    System.out.println (tmp / 2);
	}
}