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#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second

int n, m1, m2;
vector<pair<int, int>> a;
vector<pair<int, int>> b;
const int MAXN = 3e4 + 7;
vector<int> g[MAXN];
vector<int> naOdl[MAXN];
int dist[MAXN];
const int INF = 1e9;
vector<int> g2[MAXN];
vector<int> naOdl2[MAXN];
int dist2[MAXN];

void bfs(){
	for(int i = 1; i <= n; i++){
		dist[i] = INF;
	}
	dist[1] = 0;
	queue<int> q;
	q.push(1);
	while(q.size()){
		int v = q.front();
		q.pop();
		naOdl[dist[v]].push_back(v);
		for(auto u : g[v]){
			if(dist[u] > dist[v] + 1){
				dist[u] = dist[v] + 1;
				q.push(u);
			}
		}
	}
}

void bfs2(){
	for(int i = 1; i <= n; i++){
		dist2[i] = INF;
	}
	dist2[1] = 0;
	queue<int> q;
	q.push(1);
	while(q.size()){
		int v = q.front();
		q.pop();
		naOdl2[dist2[v]].push_back(v);
		for(auto u : g2[v]){
			if(dist2[u] > dist2[v] + 1){
				dist2[u] = dist2[v] + 1;
				q.push(u);
			}
		}
	}
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	cout.tie(NULL);

	cin >> n;
	//cout << n << '\n';
	cin >> m1;
	//cout << m1 << '\n';
	for(int i = 1; i <= m1; i++){
		int x, y;
		cin >> x >> y;
		//cout << x << ' ' << y << '\n';
		if(x > y){
			swap(x, y);
		}
		g[x].push_back(y);
		g[y].push_back(x);
		a.push_back({x, y});
	}
	cin >> m2;

	int kolega;
	//cout << m2 << '\n';
	for(int i = 1; i <= m2; i++){
		int x, y;
		cin >> x >> y;
		//cout << x << ' ' << y << '\n';
		if(x > y){
			swap(x, y);
		}
		if(x == 1){
			kolega = y;
		}
		g2[x].push_back(y);
		g2[y].push_back(x);
		b.push_back({x, y});
	}

	map<pair<int, int>, bool> in;
	for(auto ele : a){
		in[ele] = true;
	}

	bfs();
	bfs2();

	vector<pair<char, pair<int, int>>> op;
	for(int i = 1; i <= n; i++){
		for(auto u : naOdl[i]){
			if(in[{1, u}]){
				continue;
			}
			a.push_back({1, u});
			op.push_back({'+', {1, u}});
			in[{1, u}] = true;
		}
	}
	
	for(auto ele : b){
		if(in[ele] == false){
			in[ele] = true;
			a.push_back(ele);
			op.push_back({'+', ele});
		}
	}

	map<pair<int, int>, bool> in2;
	for(auto ele : b){
		in2[ele] = true;
	}

	for(auto ele : a){
		if(in2[ele] == false && ele.first != 1){
			op.push_back({'-', ele});
			in2[ele] = true;
		}
	}

	//usun jedynki
	for(int i = n; i >= 1; i--){
		for(auto u : naOdl2[i]){
			if(in2[{1, u}] == false && in[{1, u}]){
				op.push_back({'-', {1, u}});
			}
		}
	}

	cout << op.size() << '\n';
	for(auto ele : op){
		cout << ele.fi << ' ' << ele.se.fi << ' ' << ele.se.se << '\n';
	}

	return 0;
}