#include <iostream>

using namespace std;

int main()
{
    int size, a;
    cin >> size;

    long *arr1 = new long[size];
    long *arr2 = new long[size];
    for(int i = 0; i < size; i++){
        cin >> arr1[i];
    }
    for(int i = 0; i < size; i++){
        cin >> arr2[i];
    }
    long tmp = 0;
    for(int i = 0; i < size; i++){
        tmp+= abs(arr2[i] - arr1[i]);
        }
    cout << tmp/2;
    delete []arr1;
    delete []arr2;
    return 0;
}