#include <bits/stdc++.h>
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
int main() {
  long long test, n, a[55], b[55];
  scanf("%lld", &test);
  while (test--) {
    scanf("%lld", &n);
    long long mina = 1000000000;
    long long minb = 1000000000;
    for (long long i = 0; i < n; i++) {
      scanf("%lld", &a[i]);
      mina = min(a[i], mina);
    }
    for (long long i = 0; i < n; i++) {
      scanf("%lld", &b[i]);
      minb = min(b[i], minb);
    }
    long long ans = 0;
    for (long long i = 0; i < n; i++) {
      long long p = a[i] - mina;
      long long q = b[i] - minb;
      ans += min(p, q);
      ans += (p - min(p, q)) + (q - min(p, q));
    }
    cout << ans << endl;
  }
  return 0;
}
