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//Sylwia Sapkowska
#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
using namespace std;

void __print(int x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << "'" << x << "'";}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef LOCAL
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

#define int long long
typedef pair<int, int> T;
const int oo = 1e18, oo2 = 1e9+7, K = 30;
const int mod = 998244353;

void solve(){
    int n; cin >> n;
    int m1; cin >> m1;
    vector<vector<int>>g(n+1);
    vector<T>edges;
    set<T>s;
    for (int i = 0; i<m1; i++){
        int a, b; cin >> a >> b;
        if (a > b) swap(a, b);
        g[a].emplace_back(b);
        g[b].emplace_back(a);
        s.insert({a, b});
        edges.emplace_back(a, b);
    }
    string ret;
    vector<T>ans;
    auto add = [&](int a, int b){
        if (a == b) return;
        if (a > b) swap(a, b);
        if (s.find({a, b}) != s.end()) return;
        s.insert({a, b});
        ret += '+';
        // debug('+', a, b);
        ans.emplace_back(a, b);
    };
    auto remove = [&](int a, int b){
        if (a == b) return;
        if (a > b) swap(a, b);
        if (s.find({a, b}) == s.end()) return;
        s.erase({a, b});
        ret += '-';
        // debug('-', a, b);
        ans.emplace_back(a, b);
    };
    vector<bool>vis(n+1);
    bool f = 0;
    vector<int>post(n+1);
    int tt = 0;
    function<void(int)>dfs = [&](int v){
        if (!f) add(1, v);
        vis[v] = 1;
        for (auto x: g[v]){
            if (!vis[x]){
                dfs(x);
            }
        }
        if (f) post[v] = ++tt;
    };
    dfs(1);
    int m2; cin >> m2;
    vector<int>left;
    set<T>s2;
    for (int i = 1; i<=n; i++) g[i].clear();
    f = 1;
    vis.assign(n+1, 0);
    for (int i = 0; i<m2; i++){
        int a, b; cin >> a >> b;
        if (a > b) swap(a, b);
        if (s.find({a, b}) == s.end()){
            add(a, b);
        }
        debug(a, b);
        g[a].emplace_back(b);
        g[b].emplace_back(a);
        s2.insert({a, b});
    } 
    dfs(1);
    vector<T>fix;
    for (auto [a, b]: s){
        if (s2.find({a, b}) == s2.end()){
            if (a == 1){
                left.emplace_back(b);
            } else {
                fix.emplace_back(a, b);
            }
        }
    }
    for (auto [a, b]: fix) remove(a, b);
    debug(left);
    sort(left.begin(), left.end(), [&](auto x, auto y){
        return post[x] < post[y];
    });
    debug(left);
    for (auto v: left) remove(1, v);
    debug(s);
    debug(s2);
    cout << (int)ans.size() << "\n";
    for (int i = 0; i<(int)ans.size(); i++){
        cout << ret[i] << " " << ans[i].first << " " << ans[i].second << "\n";
    }
}

int32_t main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int t = 1;
    //cin >> t;
    while (t--) solve();

    return 0;
}