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#include <cstdio>
#include <algorithm>
#include <set>
#include <vector>
#include <queue>

using namespace std;

bool temp[31000];

void bfs(set<int>* g, int n, int* path)
{
	for (int i = 1; i <= n; i++)
	{
		temp[i] = false;
		path[i] = -1;
	}
	queue<int> q;
	q.push(1);
	int s = 0;
	temp[1] = true;
	while (!q.empty())
	{
		int c = q.front();
		q.pop();
		path[s++] = c;
		set<int>::iterator it;
		for (it = g[c].begin(); it != g[c].end(); ++it)
			if (!temp[*it])
			{
				temp[*it] = true;
				q.push(*it);
			}
	}
}

struct Operation
{
	char op;
	int a, b;
};



int main()
{
	int n, m1, m2;
	scanf("%d", &n);

	set<int>* g1 = new set<int>[n + 1];
	set<int>* g2 = new set<int>[n + 1];
	scanf("%d", &m1);
	for (int i = 0; i < m1; i++)
	{
		int a, b;
		scanf("%d %d", &a, &b);
		g1[a].insert(b);
		g1[b].insert(a);
	}

	scanf("%d", &m2);
	for (int i = 0; i < m2; i++)
	{
		int a, b;
		scanf("%d %d", &a, &b);
		g2[a].insert(b);
		g2[b].insert(a);
	}
	int* path1 = new int[n], * path2 = new int[n];

	bfs(g1, n, path1);
	bfs(g2, n, path2);

	vector<Operation> results;

	for (int i = 1; i < n; i++)
	{
		if (g1[1].find(path1[i]) == g1[1].end())
		{
			Operation o;
			o.a = 1;
			o.b = path1[i];
			o.op = '+';
			results.push_back(o);
		}
	}

	for (int i = 2; i < n; i++)
	{
		set<int>::iterator it;
		for (it = g1[i].begin(); it != g1[i].end(); ++it)
		{
			if (i < *it && g2[i].find(*it) == g2[i].end())
			{
				Operation o;
				o.a = i;
				o.b = *it;
				o.op = '-';
				results.push_back(o);
			}
		}

		for (it = g2[i].begin(); it != g2[i].end(); ++it)
		{
			if (i < *it && g1[i].find(*it) == g1[i].end())
			{
				Operation o;
				o.a = i;
				o.b = *it;
				o.op = '+';
				results.push_back(o);
			}
		}
	}

	for (int i = n - 1; i >= 1; i--)
	{
		if (g2[1].find(path2[i]) == g2[1].end())
		{
			Operation o;
			o.a = 1;
			o.b = path2[i];
			o.op = '-';
			results.push_back(o);
		}
	}

	printf("%d\n", results.size());

	for (int i = 0; i < results.size(); i++)
	{
		printf("%c %d %d\n", results[i].op, results[i].a, results[i].b);
	}

	return 0;
}