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

const int mn = 50003;
int n,m1,m2;
vector<int> G1[mn], G2[mn];
bool odw1[mn], odw2[mn];
vector<pair<char, pair<int,int>>> wyn;
map<pair<int,int>, bool> mapa1, mapa2;
vector<pair<int,int>> kraw1, kraw2;

void dfs1(int v, int r){
    odw1[v] = 1;
    for (auto i : G1[v]){
        if (!odw1[i]){
            if (v != r){
                if (!mapa1[{r, i}] && !mapa1[{i, r}]) wyn.push_back({'+', {r, i}});
            }
            dfs1(i, r);
        }
    }
}

void dfs2(int v, int r){
    odw2[v] = 1;
    for (auto i : G2[v]){
        if (!odw2[i]){
            dfs2(i, r);
            if (!mapa2[{i, r}] && !mapa2[{r, i}]) wyn.push_back({'-', {r, i}});
        }
    }
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>m1;
    for (int i = 0; i < m1; i++){
        int a,b;
        cin>>a>>b;
        G1[a].push_back(b);
        G1[b].push_back(a);
        kraw1.push_back({a,b});
        mapa1[{a, b}] = 1;
    }
    cin>>m2;
    for (int i = 0; i < m2; i++){
        int a,b;
        cin>>a>>b;
        G2[a].push_back(b);
        G2[b].push_back(a);
        kraw2.push_back({a,b});
        mapa2[{a,b}] = 1;
    }
    dfs1(1, 1);
    for (auto i : kraw1){
        if (i.first == 1 || i.second == 1) continue;
        if (!mapa2[i] && !mapa2[{i.second, i.first}]) wyn.push_back({'-', i});
    }
    for (auto i : kraw2){
        if (i.first == 1 || i.second == 1) continue;
        if (!mapa1[i] && !mapa1[{i.second, i.first}]) wyn.push_back({'+', i});
    }
    dfs2(1, 1);
    cout<<wyn.size()<<"\n";
    for (auto i : wyn){
        cout<<i.first<<" "<<i.second.first<<" "<<i.second.second<<"\n";
    }
}