func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long inf = 1e15 + 9;   const long long N = 1e5 + 5;   long long A[N], n, k, B[N];   map<long long, long long> mm;   void solve() {     long long i, j, x = 0, y = 1, m;     cin >> n;     for (i = 0; i < n; i++) {       cin >> x >> y;       mm[x] = max(mm[x], y);     }     cin >> m;     for (i = 0; i < m; i++) {       cin >> x >> y;       mm[x] = max(mm[x], y);     }     x = 0;     for (auto i : mm) x += i.second;     cout << x;   }   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long t = 1, i;     while (t--) {       solve();     }   }   