#include <iostream>
#include <cmath>

using std::cin;
using std::cout;
const char endl = '\n';

const int N = 30;

int t, n;
long long a[N], b[N], f[N][2];

int main() {
    std::ios::sync_with_stdio(false);

    cin >> t;

    while (t--) {
        cin >> n;

        for (int i = 1; i <= n; i++) {
            cin >> a[i];
        }
        for (int i = 1; i <= n; i++) {
            cin >> b[i];
        }

        f[1][0] = f[1][1] = 0;
        for (int i = 2; i <= n; i++) {
            f[i][0] = std::min(f[i - 1][0] + std::abs(a[i] - a[i - 1]) + std::abs(b[i] - b[i - 1]), f[i - 1][1] + std::abs(a[i] - b[i - 1]) + std::abs(b[i] - a[i - 1]));
            f[i][1] = std::min(f[i - 1][0] + std::abs(a[i] - b[i - 1]) + std::abs(b[i] - a[i - 1]), f[i - 1][1] + std::abs(b[i] - b[i - 1]) + std::abs(a[i] - a[i - 1]));
        }

        cout << std::min(f[n][0], f[n][1]) << endl;
    }

    return 0;
}