#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int N; cin >> N;
    N *= 2;
    vector<int> A(N),B(N);
    for(auto &a : A) cin >> a;
    for(auto &b : B) cin >> b;

    vector<bool> already(N);
    long long answer = 0;
    for(int i=0; i<N/2; i++){
        long long now = 1e18,pos = -1;
        for(int k=0; k<N; k++) if(!already.at(k)){
            if(now > A.at(k)+B.at(k)) now = A.at(k)+B.at(k),pos = k;
        }
        already.at(pos) = true; answer += A.at(pos);
        now = 1e18;
        for(int k=0; k<N; k++) if(!already.at(k)){
            if(now > A.at(k)+B.at(k)) now = A.at(k)+B.at(k),pos = k;
        }
        already.at(pos) = true; answer -= B.at(pos);
    }
    cout << answer << endl;
}