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#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
#define mp make_pair
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define eb emplace_back
#define st first
#define nd second
#define vt vector
#define VAR(__var)  #__var << ": " << __var << " "
#define PAIR(__var) #__var << ": " << __var.first << ", " << __var.second << " "
#define FOR(__var, __start, __end)  for(int __var=__start; __var<__end; ++__var)
#define FORB(__var, __start, __end) for(int __var=__start; __var>__end; --__var)
#define REP(__var, __cnt) for(int __var=0; __var<(__cnt); ++__var)
#define EACH(__var, __x) for(auto __var : __x)
#define maxi(__x, __y) __x = (__x>__y?__x:__y)
#define mini(__x, __y) __x = (__x<__y?__x:__y)
#define all(__var)     (__var).begin(),(__var).end()
#define rall(__var)    (__var).rbegin(),(__var).rend()
#define sz(__var)      (int)(__var).size()

using namespace std;
 
using namespace __gnu_pbds;
template <typename T>
using ord_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;

#ifdef DEBUG
template<typename Stream, typename T1, typename T2>
Stream& operator << (Stream& out, pair<T1, T2> a) {return out << "(" << a.st << ", " << a.nd << ")";}
 
template<typename Stream, typename T>
Stream &operator << (Stream& out, T v) {
	out << "{";
	int i = 0;
	for (auto x : v)
		out << x << ((++ i) != sz(v) ? ", " : "");
	return out << "}";
}
 
template<typename... Args>
void dump(Args... x) {((cerr << x << ", "), ...) << '\n';}
 
#define debug(x...) cerr << "[" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
typedef       long long ll;
typedef     long double ld;
typedef   pair<ll, ll> pll;
typedef pair<int, int> pii;

const bool __test_cases = false;
 
const int INF = 1e9+2137;

vt<tuple<char, int, int>> ans;
vt<vt<int>> g;
vt<int> depth;
set<pii> edges, required, to_rem;

void add_edge(int a, int b, bool print=true) {
	if(a > b)
		swap(a, b);
	if(edges.count({a, b}) == 0) {
		if(print)
			ans.pb({'+', a, b});
		edges.insert({a, b});
	}
}

void rem_edge(int a, int b, bool print=true) {
	if(a > b)
		swap(a, b);
	if(print)
		ans.pb({'-', a, b});
	edges.erase({a, b});
}

void dfs(int v) {
	for(auto u : g[v])
		if(depth[u] == -1) {
			depth[u] = depth[v]+1;
			dfs(u);
		}
}

void run_dfs(int v) {
	fill(all(depth), -1);
	depth[v] = 0;
	dfs(v);
}

void construct_graph(set<pii> &ed) {
	fill(all(g), vt<int>());
	for(auto [a, b] : ed) {
		g[a].pb(b);
		g[b].pb(a);
	}
}

void solve() {
	int n, m;
	cin >> n >> m;

	g.resize(n+1);
	depth.resize(n+1);

	FOR(i, 0, m) {
		int a, b;
		cin >> a >> b;
		add_edge(a, b, false);
	}

	construct_graph(edges);

	int m2;
	cin >> m2;
	FOR(i, 0, m2) {
		int a, b;
		cin >> a >> b;
		if(a > b)
			swap(a, b);
		required.insert({a, b});
	}

	for(auto [a, b] : edges) {
		if(required.count({a, b}) == 0)
			to_rem.insert({a, b});
	}
	
	// order by depth
	run_dfs(1);

	vt<tuple<int, int, int>> to_add;
	FOR(i, 2, n+1)
		to_add.pb({depth[i], 1, i});

	sort(all(to_add));
	for(auto [t, a, b] : to_add) {
		add_edge(a, b);
	}

	// add needed
	for(auto [a, b] : required) {
		add_edge(a, b);
	}
	
	// remove not needed 
	for(auto [a, b] : to_rem) {
		if(a != 1)
			rem_edge(a, b);
	}

	// order by depth
	construct_graph(required);
	run_dfs(1);

	vt<tuple<int, int, int>> rem_help;
	FOR(i, 2, n+1) {
		if(required.count({1, i}) == 0)
			rem_help.pb({-depth[i], 1, i});
	}

	sort(all(rem_help));
	for(auto [_, a, b] : rem_help) {
		rem_edge(a, b);
	}

	cout << sz(ans) << '\n';
	for(auto [t, x, y] : ans)
		cout << t << ' ' << x << ' ' << y << '\n';
}

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	int t=1;
	if(__test_cases)
		cin >> t;
	while(t--) {
		solve();
	}

	return 0;
}