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#include<bits/stdc++.h>
 
#define pb push_back
#define pob pop_back
#define eb emplace_back
#define fi first
#define se second
#define turbo ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mid ((l+r)/2)
#define midLL ((l+r)/2LL)
#define mide ((lo+hi)/2)
#define mideLL ((lo+hi)/2LL)
#define endl '\n'
#define shandom_ruffle random_shuffle
#define lowbit(x) x&(-x)
#define bits(x) __builtin_popcount(x) 
#define mins(se) (*se.begin())
#define maxs(se) (*--se.end())
#define all(x) x.begin(), x.end()
#define log2_floor(i) (i ? __builtin_clzll(1) - __builtin_clzll(i) : -1)
#define siz(cont) ((int)cont.size())
#define each(it, cont) for(auto &it : cont)

using ll = long long;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;
using pli = std::pair<ll, int>;
using pil = std::pair<int, ll>;
using vll = std::vector<pll>;
using vii = std::vector<pii>;
using vi = std::vector<int>;
using vl = std::vector<ll>;
using vvl = std::vector<vl>;
using vvi = std::vector<vi>;
using vvii = std::vector<vii>;
using vli = std::vector<pli>;
using vvli = std::vector<vli>;
using vil = std::vector<pil>;
using vvil = std::vector<vil>;
using vc = std::vector<char>;
using vvc = std::vector<std::vector<char>>;
using vb = std::vector<bool>;
using vvb = std::vector<vb>;

void err() { std::cout << "\n"; fflush(stdout); }
template<class T, class... Ts>
void err(T arg, Ts &... args) {
    std::cout << arg << ' ';
    err(args...);
}

using namespace std;

constexpr int N = 30010;

vvi v(N), v2(N);

vii res;

set<pair<int, int>> edgs;
set<pair<int, int>> final;

vi autostradki;

inline void add(int a, int b, bool st = true) {
    edgs.insert({min(a, b), max(a, b)});
    if (st)
        res.pb({min(a, b), max(a, b)});
}

inline void rem(int a, int b, bool st = true) {
    edgs.erase({min(a, b), max(a, b)});
    if (st)
        res.pb({-min(a, b), max(a, b)});
}

inline bool is(int a, int b) {
    return edgs.contains({min(a, b), max(a, b)});
}

void build_autostradka() {
    queue<int> q;
    vb vis(N);
    vis[1] = true;
    for (auto it : v[1]) {
        q.push(it);
        vis[it] = true;
    }
    while (!q.empty()) {
        auto f = q.front();
        q.pop();
        if (!is(f, 1)) {
            add(f, 1);
        }
        for (auto it : v[f])
            if (!vis[it]) {
                q.push(it);
                vis[it] = true;
            }
    }
}

void zwin_autostradke() {
    queue<int> q;
    vi pom;
    vb vis(N);
    vis[1] = true;
    for (auto it : v2[1]) {
        q.push(it);
        vis[it] = true;
    }
    while (!q.empty()) {
        auto f = q.front();
        q.pop();
        pom.pb(f);
        for (auto it : v2[f])
            if (!vis[it]) {
                q.push(it);
                vis[it] = true;
            }
    }

    for (int i = siz(pom)-1; i>=0; i--)
        if (!final.contains({1, pom[i]}) and is(1, pom[i]))
            rem(1, pom[i]);
}

signed main() {
    turbo;
    int n, m; cin >> n >> m;
    for (int i = 0; i < m; i++) {
        int a, b; cin >> a >> b;
        v[a].pb(b);
        v[b].pb(a);
        add(a, b, false);
    }
    build_autostradka();
    int m2; cin >> m2;
    for (int i = 0; i < m2; i++) {
        int a, b; cin >> a >> b;
        final.insert({min(a, b), max(a, b)});
        v2[a].pb(b);
        v2[b].pb(a);
        if (!is(a, b))
            add(a, b);
    }
    vii rm;
    for (auto it : edgs)
        if (it.fi != 1 and !final.contains(it))
            rm.pb(it);
    for (auto it : rm)
        rem(it.fi, it.se);
    zwin_autostradke();

    cout << siz(res) << endl;
    for (auto [a, b] : res)
        cout << (a>0 ? "+ " : "- ") << abs(a) << " " << b << endl;
}