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#include <bits/stdc++.h>

typedef long long int lli;

using namespace std;

#define MAX4 10010
#define MAX5 100010
#define MAX6 1000010

#define FOR(n) for (int i = 0; i < n; i++)

using vti = vector<int>;
using vts = vector<string>;

template <typename T> void dbg(T last) { cout << last << "\n"; }

template <typename T, typename... args> void dbg(T current, args... next) {
  cout << current << ' ';
  dbg(next...);
}

template <typename T> void getInput(vector<T> &v, int n, int x = 0) {
  for (int i = x; i < n; i++) {
    cin >> v[i];
  }
}

//-----------------------------------------------------------------------------------------------//
int cnt[MAX6];

set<int> tab1[MAX5];
set<int> tab2[MAX5];
set<int> visited1;
void solve() {
  int n;
  cin >> n;
  int q1, q2;
  cin >> q1;
  for (int i = 0; i < q1; i++) {
    int a, b;
    cin >> a >> b;
    tab1[a].insert(b);
    tab1[b].insert(a);
  }

  queue<int> q;
  vector<pair<int, int>> del;
  vector<pair<int, int>> add;

  for (int x : tab1[1]) {
    q.push(x);
    visited1.insert(x);
  }
  visited1.insert(1);
  while (!q.empty()) {
    int x = q.front();
    q.pop();
    for (int y : tab1[x]) {
      if (visited1.insert(y).second) {
        add.push_back({1, y});
        q.push(y);
      }
    }
  }

  cin >> q2;
  for (int i = 0; i < q2; i++) {
    int a, b;
    cin >> a >> b;
    tab2[a].insert(b);
    tab2[b].insert(a);
  }

  for (int i = 2; i <= n; i++) {
    for (int x : tab2[i]) {
      if (x != 1 && !tab1[i].count(x)) {
        add.push_back({i, x});

        tab1[x].insert(i);
        tab1[i].insert(x);
      }
    }
  }

  for (int i = 2; i <= n; i++) {
    for (int x : tab1[i]) {
      if (x != 1 && !tab2[i].count(x)) {
        del.push_back({i, x});

        tab1[x].erase(i);
      }
    }
  }

  visited1.clear();
  for (int x : tab2[1]) {
    q.push(x);
    visited1.insert(x);
  }
  visited1.insert(1);
  stack<int> s;
  while (!q.empty()) {
    int x = q.front();
    q.pop();
    for (int y : tab2[x]) {
      if (visited1.insert(y).second) {
        q.push(y);
        s.push(y);
      }
    }
  }

  while (!s.empty()) {
    del.push_back({1, s.top()});
    s.pop();
  }

  std::cout << add.size() + del.size() << "\n";
  for (auto p : add) {
    cout << "+ " << p.first << " " << p.second << "\n";
  }

  for (auto p : del) {
    cout << "- " << p.first << " " << p.second << "\n";
  }
}

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

  solve();

  return 0;
}