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#pragma GCC optimize ("Ofast")
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define FOR(i, a, b) for (auto i=(a); i<(b); i++)
#define FORD(i, a, b) for (int i=(a); i>(b); i--)
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(), (x).end()
#define PPC(x) __builtin_popcountll(x)
#define MSB(x) (63 - __builtin_clzll(x))
#define LSB(x) __builtin_ctzll(x)
#define ARG(x, i) (get<i>(x))
#define ithBit(m, i) ((m) >> (i) & 1)
#define pb push_back
#define ft first
#define sd second
#define kw(a) ((a) * (a))
#define CLR(x) x.clear(), x.shrink_to_fit()
#ifdef DEBUG
#include "debug.h"
#else
#define dbg(...) 0
#endif
using namespace std;
 
template <typename T1, typename T2> inline void remin(T1& a, T2 b) { a = min(a, (T1)b);	}
template <typename T1, typename T2> inline void remax(T1& a, T2 b) { a = max(a, (T1)b);	}

const int maxN = 30'003;

int vis[maxN], visCtr;
vector <pair <int, int> > adding, removing;

struct Graph
{
	vector <int> G[maxN];
	int order[maxN];
	set <pair <int, int> > S;
	int n;

	void load(int _n, int m)
	{
		n = _n;

		while (m--)
		{
			int a, b;
			scanf ("%d%d", &a, &b);
			G[a].pb(b);
			G[b].pb(a);

			if (a > b)
				swap(a, b);
			if (a != 1)
				S.insert({ a, b });
		}
	}

	void genOrder()
	{
		vis[1] = ++visCtr;
		order[0] = 1;

		for (int front = 0, back = 1; back < n; front++)
		{
			int v = order[front];

			for (int u : G[v])
				if (vis[u] != visCtr)
					vis[u] = visCtr, order[back++] = u;
		}
	}

	void addRootEdges()
	{
		int skip = SZ(G[1]) + 1;
		
		FOR(i, skip, n)
		{
			int v = order[i];
			adding.pb({ 1, v });
		}
	}

	void removeRootEdges()
	{
		int skip = SZ(G[1]) + 1;

		FORD(i, n-1, skip-1)
		{
			int v = order[i];
			removing.pb({ 1, v });
		}
	}
}src, trg;

void addAndRemoveEdges()
{
	const auto& A = src.S;
	const auto& B = trg.S;

	auto at = A.begin();
	auto bt = B.begin();
	
	while (at != A.end() and bt != B.end())
	{
		auto ord = *at <=> *bt;

		if (ord < 0)
			removing.pb(*at++);
		if (ord == 0)
			at++, bt++;
		if (ord > 0)
			adding.pb(*bt++);
	}

	while (at != A.end())
		removing.pb(*at++);
	while (bt != B.end())
		adding.pb(*bt++);
}

void print()
{
	printf("%d\n", SZ(adding) + SZ(removing));
	
	for (auto& [a, b] : adding)
		printf("+ %d %d\n", a, b);
	
	for (auto& [a, b] : removing)
		printf("- %d %d\n", a, b);

	printf("\n");
}

void solve()
{
	int n, m;
	scanf ("%d%d", &n, &m);
	src.load(n, m);

	scanf ("%d", &m);
	trg.load(n, m);

	src.genOrder();
	src.addRootEdges();

	addAndRemoveEdges();

	trg.genOrder();
	trg.removeRootEdges();

	print();
}

int main()
{
	int t = 1;
//	scanf ("%d", &t);	
	FOR(tid, 1, t+1)
	{
		//printf("Case #%d: ", tid);
		solve();
	}
	return 0;
}