import java.util.*;
import java.io.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    Scanner scanner = new Scanner(System.in);
        int count = scanner.nextInt();
        int valueArray[] = new int[count];
        int costArray[] = new int[count];
        int ans = 0;
        for(int i = 0; i < count; i++){
			valueArray[i] = scanner.nextInt();
        }
        for(int i = 0; i < count; i++){
			costArray[i] = scanner.nextInt();
        }
        for(int i = 0; i < count; i++){
	        if (costArray[i] >= valueArray[i]) {
	        	continue;
	        }
	        ans = ans + valueArray[i] - costArray[i];
		}
		System.out.println(ans);
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz