include

include

include

using namespace std; //记得开long long int main() {

int n;
cin>>n;
long long a[2*n],b[2*n],total_b=0,total_d=0;
vector<long long> d(2*n);
for(int i=0; i<2*n; i++) {
	cin>>a[i];
}
for(int j=0; j<2*n; j++) {
	cin>>b[j];
	total_b+=b[j];
}
for(int k=0; k<2*n; k++) {
	d[k]=a[k]-b[k];
}
sort(d.begin(),d.end(),greater<long long>());   //降序
for(int p=0; p<n; p++) {
	total_d+=d[p];
}
cout<<total_b+total_d;
return 0;

}