#include <iostream>
#include <vector>
using namespace std;

typedef long long ll;


int main() {
    int t;
    cin >> t;
    while(t--) {
        int n;
        cin >> n;
        vector<int> a(n), b(n);
        for(int i = 0; i < n; i++) {
            cin >> a[i];
        }
        for(int i = 0; i < n; i++) {
            cin >> b[i];
        }
        ll sum = 0;
        for(int i = 0; i + 1 < n; i++) {
            ll m1 = abs(a[i] - a[i + 1]) + abs(b[i] - b[i + 1]);
            ll m2  = abs(a[i + 1] - b[i]) + abs(b[i + 1] - a[i]);
            sum += min(m1, m2);
        }
        cout << sum << endl;
    }
    
    return 0;
}