#include <algorithm>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <iostream>
#include <numeric>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <functional>
#include <iomanip>
using namespace std;
using ll = long long;

class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n;
public:range(int n_):i({0}),n({n_}){}range(int i_,int n_):i({i_}),n({n_}){}I& begin(){return i;}I& end(){return n;}};

template<typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p){ return os << "{" << p.first << ", " << p.second << "}"; }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& obj) { os << "{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
template<typename T> ostream& operator<<(ostream& os, const set<T>& obj) { os << "set{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
template<typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& obj) { os << "map{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
template<typename T> void take(vector<T>& vec, int n) { vec.resize(n); for (int i = 0; i < n; ++i) cin >> vec[i]; }

#ifdef ONLINE_JUDGE
#define dump(expr) ;
#else
#define dump(expr) { cerr << "\033[33m#L" << __LINE__ << ": " << expr << "\033[39m" << endl; }
#endif

struct UnionFindWithWeights {
  vector<int> data, weights;
  UnionFindWithWeights(int n) : data(n, -1), weights(n, 1) {}
  int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); }
  bool find(int x, int y) { return root(x) == root(y); }
  void uni(int x, int y) {
    x = root(x);
    y = root(y);
    if (x != y) {
      int new_weight = weights[x] + weights[y];
      if (data[x] < data[y])
        swap(x, y);
      data[x] += data[y];
      data[y] = x;
      weights[x] = new_weight;
    }
  }
  int weight(int x) { return weights[root(x)]; }
};


namespace solver {

template<typename T1, typename T2> struct In2 {
  T1 a; T2 b;
  friend std::istream& operator>>(std::istream& is, In2& obj) { T1 t1; T2 t2; is >> t1 >> t2; obj = {t1, t2}; return is; }
};

template<typename T1, typename T2, typename T3> struct In3 {
  T1 a; T2 b; T3 c;
  friend std::istream& operator>>(std::istream& is, In3& obj) { T1 t1; T2 t2; T3 t3; is >> t1 >> t2 >> t3; obj = {t1, t2, t3}; return is; }
};

int n, m1, m2;
vector<In2<int, int>> edges1;
vector<In2<int, int>> edges2;

void read() {
  cin >> n >> m1 >> m2;
  take(edges1, m1);
  take(edges2, m2);
}

using RetType = ll;

RetType run() {
  UnionFindWithWeights uf1(n + 1), uf2(n + 1);

  for (auto e : edges1) uf1.uni(e.a, e.b);
  for (auto e : edges2) uf2.uni(e.a, e.b);

  vector<vector<int>> members1(n + 1);

  for (int i : range(1, n + 1)) {
    members1[uf1.root(i)].push_back(i);
  }

  ll res = 0;
  for (int i : range(1, n + 1)) {
    set<int> roots;
    for (int j : members1[i]) {
      int root = uf2.root(j);
      if (roots.count(root)) continue;
      roots.insert(root);

      dump(i << " " << uf2.weight(root) << " " << members1[i].size());

      res += (ll)uf2.weight(root) * (ll)members1[i].size();
    }
  }
  res -= n;
  return res;
}

}  // namespace

template <typename F>
void run(F f) { if constexpr (std::is_same_v<decltype(f()), void>) f(); else cout << f() << endl; }

int main(int argc, char** argv) {
  cerr << fixed << setprecision(12);
  cout << fixed << setprecision(12);
  int testcase = 1;
  if (argc > 1) testcase = atoi(argv[1]);
  while (testcase--) {
    solver::read();
  }
  run(solver::run);
}