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#include <bits/stdc++.h>

using namespace std;

typedef unsigned uint;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ldbl;
typedef pair<int, int> pii;
typedef pair<uint, uint> puu;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<double, double> pdd;
typedef vector<int> vi;
typedef vector<uint> vu;
typedef vector<ll> vll;
typedef vector<ull> vull;
typedef vector<pii> vpii;
typedef vector<puu> vpuu;
typedef vector<pll> vpll;
typedef vector<pull> vpull;
typedef vector<string> vstr;
typedef vector<double> vdbl;
typedef vector<ldbl> vldbl;
#define pb push_back
#define ppb pop_back
#define pfr push_front
#define ppfr pop_front
#define emp emplace
#define empb emplace_back
#define be begin
#define rbe rbegin
#define all(x) (x).be(), (x).end()
#define rall(x) (x).rbe(), (x).rend()
#define fir first
#define sec second
#define mkp make_pair
#define brif(cond) if (cond) break
#define ctif(cond) if (cond) continue
#define retif(cond) if (cond) return
void canhazfast() {ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);}
template<typename T> T gcd(T a, T b) {return b ? gcd(b, a%b) : a;}
template<typename T> T extgcd(T a, T b, T &x, T &y)
{
    T x0 = 1, y0 = 0, x1 = 0, y1 = 1;
    while (b) {
        T q = a/b; a %= b; swap(a, b);
        x0 -= q*x1; swap(x0, x1);
        y0 -= q*y1; swap(y0, y1);
    }
    x = x0; y = y0; return a;
}
int ctz(uint x) {return __builtin_ctz(x);}
int ctzll(ull x) {return __builtin_ctzll(x);}
int clz(uint x) {return __builtin_clz(x);}
int clzll(ull x) {return __builtin_clzll(x);}
int popcnt(uint x) {return __builtin_popcount(x);}
int popcntll(ull x) {return __builtin_popcountll(x);}
int bsr(uint x) {return 31^clz(x);}
int bsrll(ull x) {return 63^clzll(x);}

#define N 30016
#define M 50016

bool vis[N];
pii es[M], ed[M];
vi adj[N];
int q[N], ss[N], sd[N];

int make_star(int s[])
{
    int sz = 0, k = 0;

    vis[1] = true;
    for (int v : adj[1]) {
        vis[v] = true;
        q[sz++] = v;
    }
    for (int i = 0; i < sz; ++i) {
        int u = q[i];
        for (int v : adj[u]) {
            ctif(vis[v]);
            vis[v] = true;
            q[sz++] = v;
            s[k++] = v;
        }
    }
    return k;
}

int main()
{
    canhazfast();

    int n, ms, md, ks, kd, c = 0;

    cin >> n >> ms;
    for (int i = 0; i < ms; ++i) {
        int x, y;
        cin >> x >> y;
        adj[x].pb(y);
        adj[y].pb(x);
        es[i] = {x, y};
        if (x == 1 || y == 1) ++c;
    }
    ks = make_star(ss);
    for (int i = 1; i <= n; ++i) adj[i].clear();
    fill_n(vis+1, n, false);
    cin >> md;
    for (int i = 0; i < md; ++i) {
        int x, y;
        cin >> x >> y;
        adj[x].pb(y);
        adj[y].pb(x);
        ed[i] = {x, y};
        if (x == 1 || y == 1) ++c;
    }
    kd = make_star(sd);
    cout << ks+ms+md+kd-c << '\n';
    for (int i = 0; i < ks; ++i) cout << "+ 1 " << ss[i] << '\n';
    for (int i = 0; i < ms; ++i) {
        ctif(es[i].fir == 1 || es[i].sec == 1);
        cout << "- " << es[i].fir << ' ' << es[i].sec << '\n';
    }
    for (int i = 0; i < md; ++i) {
        ctif(ed[i].fir == 1 || ed[i].sec == 1);
        cout << "+ " << ed[i].fir << ' ' << ed[i].sec << '\n';
    }
    for (int i = kd-1; i >= 0; --i) cout << "- 1 " << sd[i] << '\n';

    return 0;
}