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#include <bits/stdc++.h>
using namespace std;
struct trojka{
    char znak;
    int a,b;
};
vector <int> Con1[30001];
vector <int> Con2[30001];
vector <trojka> Res;
int Odw1[30001];
int Odw2[30001];
bool czyconz1[30001];
bool czyconz2[30001];
void DFS1(int a,int ojc){
    Odw1[a] = 1;
    if(czyconz1[a] == 0 && a != 1){
        Res.push_back({'+',1,a});
    }
    for (int i = 0; i < Con1[a].size();i++){
        int x = Con1[a][i];
        if(Odw1[x] == 0 && x != ojc){
            DFS1(x,a);
        }
    }
}
void DFS2(int a,int ojc){
    Odw2[a] = 1;
    for (int i = 0; i < Con2[a].size();i++){
        int x = Con2[a][i];
        if(Odw2[x] == 0 && x != ojc){
            DFS2(x,a);
        }
    }
    if(czyconz2[a] == 0 && a != 1){
        Res.push_back({'-',1,a});
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    int m1,m2;
    cin >> m1;
    vector < pair<int,int> > V1;
    vector < pair<int,int> > V2;
    for (int i = 0; i < m1;i++){
        int a,b;
        cin >> a >> b;
        V1.push_back({a,b});
        Con1[a].push_back(b);
        Con1[b].push_back(a);
        if(min(a,b) == 1){
            czyconz1[max(a,b)] = 1;
        }
    }
    DFS1(1,-1);
    for (int i = 0; i < V1.size();i++){
        int a = V1[i].first;
        int b = V1[i].second;
        if(min(a,b) != 1){
            Res.push_back({'-',a,b});
        }
    }
    cin >> m2;
    for (int i = 0; i < m2;i++){
        int a,b;
        cin >> a >> b;
        V2.push_back({a,b});
        Con2[a].push_back(b);
        Con2[b].push_back(a);
        if(min(a,b) == 1){
            czyconz2[max(a,b)] = 1;
        }
        else{
            Res.push_back({'+',a,b});
        }
    }
    DFS2(1,-1);
    cout << Res.size() << '\n';
    for (int i = 0; i < Res.size();i++){
        cout << Res[i].znak << " " << Res[i].a << " " << Res[i].b << '\n';
    }
}