#include <iostream>
#include <cmath>
using namespace std;
int main() {
int n, a[101],b, cnt=0;
cin>>n;
for(int i=0;i<n;i++){
cin>>a[i];
}
for(int i=0;i<n;i++){
cin>>b;
cnt+=abs(a[i]-b);
}
cout<<cnt/2;
return 0;
}
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