#include <bits/stdc++.h>   using namespace std;   inline void speedUp() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);   }   long long int t, n, m, p[100005], q[100005], Podd, Peven, Qodd, Qeven, tot;   int main() {     speedUp();     int t, n;     cin >> t;     while (t--) {       tot = Podd = Peven = Qodd = Qeven = 0;       cin >> n;       for (int i = 1; i <= n; i++) {         cin >> p[i];         if (p[i] % 2 == 0)           Peven++;         else           Podd++;       }       cin >> m;       for (int i = 1; i <= m; i++) {         cin >> q[i];         if (q[i] % 2 == 0)           Qeven++;         else           Qodd++;       }       for (int i = 1; i <= n; i++) {         if (p[i] % 2 == 0)           tot += Qeven;         else           tot += Qodd;       }       cout << tot << endl;     }   }   