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#include <bits/stdc++.h>
using namespace std;

#ifndef LOCAL
#pragma GCC optimize("O3")
#endif

#define fi first
#define se second
#define pii pair<int,int>
#define mp make_pair
#define endl '\n'
#define sp <<" "<<
#define eb emplace_back
#define MOD 1000000007
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()

using ll = long long;
#define vec vector

template <class T> void print_v(vector<T> &v) { cout << "{"; for (auto x : v) cout << x << ","; cout << "}\n"; }
template <class T> void print_m(vector<vector<T>> &m) { for (auto v : m) print_v(v); cout << '\n'; }

#define fora(a) for(auto e:a)
#define it(i,s,e) for(long long int i=s;i<e;i++)
#define ita(i,s,e) for(long long int i=s;i<=e;i++)
#define itr(i,e,s) for(long long int i=e-1;i>=s;i--)
#define urs(r...)typename decay<decltype(r)>::type
#define rep(i,n)for(urs(n)i=0;i<(n);++i)


const int MAX = 30000 + 10;
int atoms;
vec<set<int>> graph(MAX);
vec<set<int>> target_graph(MAX);


vec<tuple<char, int, int>> ops;


void star_graph() {
    set<int> vis;
    queue<int> q;
    q.push(1);
    while (!q.empty()) {
        int elt = q.front();
        q.pop();
        if (vis.count(elt)) {
            continue;
        }
        vis.insert(elt);

        if (elt != 1 && !graph[elt].count(1)) {
            graph[1].insert(elt);
            graph[elt].insert(1);

            ops.eb(make_tuple('+', 1, elt));
        }

        for (int neigh: graph[elt]) {
            q.push(neigh);
        }
    }
}

void connect_graph() {
    for (int node=2; node <= atoms; node++) {
        for (int neigh: target_graph[node]) {
            if (!graph[neigh].count(node)) {
                graph[neigh].insert(node);
                graph[node].insert(neigh);

                ops.eb(make_tuple('+', node, neigh));
            }
        }
    }
}

vec<int> visit_order() {
    set<int> vis;
    vec<int> vis_vec;
    queue<int> q;
    q.push(1);
    while (!q.empty()) {
        int elt = q.front();
        q.pop();
        if (vis.count(elt)) {
            continue;
        }
        vis.insert(elt);
        if (elt!=1) vis_vec.eb(elt);
        for (int neigh: target_graph[elt]) {
            q.push(neigh);
        }
    }

    return vis_vec;
}

void purge_graph() {
    for (int node=2; node <= atoms; node++) {
        set<int> neighs = graph[node];
        for (int neigh: neighs) {
            if (neigh!=1 && !target_graph[neigh].count(node)) {
                graph[neigh].erase(node);
                graph[node].erase(neigh);

                ops.eb(make_tuple('-', node, neigh));
            }
        }
    }

    vec<int> vis_ord = visit_order();
    reverse(vis_ord.begin(), vis_ord.end());

    for (int neigh: vis_ord) {
        if (!target_graph[neigh].count(1)) {
            ops.eb(make_tuple('-', 1, neigh));
        }
    }
}

void solve() {
    // vec<set<int>> cp = graph;

    star_graph();
    connect_graph();
    purge_graph();

    // for (auto [c, a, b]: ops) {
    //     //cout << c sp a sp b << endl;
    //     bool found = false;
    //     for (int c: cp[a]) {
    //         if (cp[b].count(c)) {
    //             found = true;
    //             break;
    //         }
    //     }

    //     if (!found) {
    //         cout << "FAIL (unstable)";
    //         return;
    //     }

    //     if (c == '+') {
    //         if (cp[a].count(b) || cp[b].count(a)) {
    //             cout << "FAIL (already connected)";
    //             return;
    //         }

    //         cp[a].insert(b);
    //         cp[b].insert(a);
    //     } else {
    //         if (!cp[a].count(b) || !cp[b].count(a)) {
    //             cout << "FAIL (already disconnected)";
    //             return;
    //         }

    //         cp[a].erase(b);
    //         cp[b].erase(a);
    //     }
    // }

    // bool err = 0;
    // for (int i=1; i<=atoms; i++) {
    //     if (cp[i] != target_graph[i]) {

    //         for (int x: cp[i]) {
    //             cout << x << " ";
    //         }
    //         cout << endl;
    //         for (int x: target_graph[i]) {
    //             cout << x << " ";
    //         }
    //         cout << endl;
    //     }
    // }


    cout << ops.size() << endl;
    for (auto [c, a, b]: ops) {
        cout << c sp a sp b << endl;
    }
}

void load_graph(vec<set<int>> &graph) {

    int n;
    cin >> n;
    rep(_, n) {
        int a, b;
        cin >> a >> b;
        graph[a].insert(b);
        graph[b].insert(a);
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> atoms;
    load_graph(graph);
    load_graph(target_graph);



    solve();

    return 0;
}