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#include <bits/stdc++.h>
using namespace std;
constexpr int MAXN = 1e5 +7;
bool visited[MAXN][2];
vector<int> G[MAXN][2];
int n;
int m1, m2;
vector<pair<int, int>> G2;
set<pair<int, int>> S;
vector<tuple<int, int, int>> anserw;
set<pair<int, int>> act;
bool wyp;

void bfs(int a){
	visited[a][0] = 1;
	queue<int> Q;
	Q.push(a);
	
	
	while(Q.size()){
		int v = Q.front(); Q.pop();
		
		
		for(auto u : G[v][0]){
			if(visited[u][0]) continue;
			visited[u][0] = 1;
			Q.push(u);
			
			
			if(S.find({a, u}) != S.end())
				S.erase({a, u});
			else anserw.push_back({1, a, u});
			//cout << "+ 1" << " " << i << "\n";
			act.insert({a, u});
		}
	}
}

void usun(int v){
	visited[v][1] = 1;
	
	for(auto u : G[v][1]){
		if(visited[u][1]) continue;
		usun(u);
	}

	if(act.find({1, v}) != act.end()){
		act.erase({1, v});
		anserw.push_back({-1, 1, v});
	}
}

void wypisz(int a, int b = -1){
	if(!wyp) return;
	cout << a << " ";
	if(b != -1) cout << b;
	cout << "\n";
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	wyp = 0;
	cin >> n; wypisz(n);
	cin >> m1; wypisz(m1);
	
	for(int i = 1; i <= m1; i++){
		int a, b;
		cin >> a >> b; wypisz(a, b);
		if(b < a) swap(a, b);
		S.insert({a, b});
		G[a][0].push_back(b);
		G[b][0].push_back(a);
	}
	
	cin >> m2; wypisz(m2);
	
	for(int i = 1; i <= m2; i++){
		int a, b;
		cin >> a >> b; wypisz(a, b);
		if(b < a) swap(a, b);
		G2.push_back({a, b});
		G[a][1].push_back(b);
		G[b][1].push_back(a);
	}
	
	//to jest bfs
	bfs(1);
	
	for(auto [u, v] : S)
		anserw.push_back({-1, u, v});
		//cout << "- " << u << " " << v << "\n";
	
	
	for(auto [u, v] : G2){
		if(act.find({u, v}) != act.end()){
			act.erase({u, v});
		}
		else anserw.push_back({1, u, v});
		//cout << "+ " << u << " " << v << "\n";
	}
	
	usun(1);
	
	//for(auto [u, v] : act)
		//anserw.push_back({-1, u, v});
		//cout << "- " << u << " " << v << "\n";
	cout << anserw.size() << "\n";
	
	for(auto [z, u, v] : anserw){
		if(z == -1) cout << "- ";
		else cout << "+ ";
		cout << u << " " << v << "\n";
	}
	
}