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// clang-format off
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
using namespace std;
template<class Fun>
class y_combinator_result {
    Fun fun_;
public:
    template<class T> explicit y_combinator_result(T &&fun): fun_(forward<T>(fun)) {}
    template<class ...Args> decltype(auto) operator()(Args &&...args) { return fun_(ref(*this), forward<Args>(args)...); }
};
template<class Fun> decltype(auto) y_combinator(Fun &&fun) { return y_combinator_result<decay_t<Fun>>(forward<Fun>(fun)); }
// using namespace __gnu_pbds;
// template <typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef XOX
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) { ris << "(" << d.first << ", " << d.second << ")"; }
sim dor(rge<c> d) { *this << "["; for (auto it = d.b; it != d.e; ++it) *this << ", " + 2 * (it == d.b) << *it; ris << "]"; }
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
struct { template <class T> operator T() { T x; cin >> x; return x; } } in;
#define endl '\n'
#define pb emplace_back
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
using i64 = long long;
template <class T> using vt = vector<T>;
template <class T, size_t n> using ar = array<T, n>;
namespace R = ranges;
auto ra(auto x, auto y) { return R::iota_view(x, y); }
// #define int long long
// clang-format on

void solve() {
    int n = in, ma = in;
    set<ar<int, 2>> edges;
    vt<pair<char, ar<int, 2>>> print;
    auto has_edge = [&](int u, int v) { return edges.count({u, v}); };
    auto add_edge = [&](int u, int v) {
        if (has_edge(u, v)) return;
        edges.insert({u, v});
        edges.insert({v, u});
        print.pb('+', ar<int, 2>{u, v});
    };
    auto del_edge = [&](int u, int v) {
        if (!has_edge(u, v)) return;
        edges.erase({u, v});
        edges.erase({v, u});
        print.pb('-', ar<int, 2>{u, v});
    };
    vt<vt<int>> ga(n);
    for (int i : ra(0, ma)) {
        int u = in, v = in;
        --u, --v;
        ga[u].pb(v), ga[v].pb(u);
        add_edge(u, v);
        print.pop_back();
    }
    for (int i : ra(0, n)) {
        sort(all(ga[i]));
    }
    int mb = in;
    vt<vt<int>> gb(n);
    for (int i : ra(0, mb)) {
        int u = in, v = in;
        --u, --v;
        gb[u].pb(v), gb[v].pb(u);
    }
    for (int i : ra(0, n)) {
        sort(all(gb[i]));
    }
    vt<bool> vis(n);
    y_combinator([&](auto f, int u) -> void {
        vis[u] = 1;
        if (u != 0 && !has_edge(0, u)) add_edge(0, u);
        for (int v : ga[u]) {
            if (!vis[v]) {
                f(v);
            }
        }
    })(0);
    for (int i : ra(1, n)) {
        int j = (ga[i][0] == 0);
        debug() << imie(i) << imie(ga[i]) << imie(gb[i]);
        for (int k : gb[i]) {
            if (k == 0) continue;
            while (j < sz(ga[i]) && ga[i][j] < k) {
                del_edge(ga[i][j], i);
                ++j;
            }
            if (j == sz(ga[i]) || ga[i][j] != k)
                add_edge(i, k);
            else {
                ++j;
            }
        }
        while (j < sz(ga[i])) {
            del_edge(ga[i][j], i);
            ++j;
        }
    }
    fill(all(vis), 0);
    vis[0] = 1;
    for (int to : gb[0]) {
        y_combinator([&](auto f, int u) -> void {
            vis[u] = 1;
            for (int v : gb[u]) {
                if (!vis[v]) f(v);
            }
            if (gb[u][0] != 0) del_edge(0, u);
        })(to);
    }
    cout << sz(print) << endl;
    for (auto [c, e] : print) {
        cout << c << " " << e[0] + 1 << " " << e[1] + 1 << endl;
    }
}

int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    // int t = in;
    while (t--) {
        solve();
    }
}