1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
#include <bits/stdc++.h>
using namespace std;
 
#define fwd(i, a, n) for (int i = (a); i < (n); i ++)
#define rep(i, n) fwd(i, 0, n)
#define all(X) begin(X), end(X)
#define sz(X) ((int)X.size())
#define st first
#define nd second
#define pii pair<int, int>
#define vi vector<int>
#define ll long long
 
#ifdef LOC
auto &operator<<(auto &out, pair<auto, auto> a) {
	return out << "(" << a.st << ", " << a.nd << ")";
}
 
auto &operator<<(auto &out, auto a) {
	out << "{";
	for (auto b : a)
		out << b << ", ";
	return out << "}";
}
 
void dump(auto... x) { ((cerr << x << ", "), ...) << '\n'; }
#define debug(x...) cerr << __LINE__ << ": [" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
vector<array<int, 3>> simplify(int n, vector<vector<int>>& g){
	vector<bool> vis(n+1, false);
	vis[1] = true;
	vector<array<int, 3>> ans;
	queue<int> q;
	for(auto u : g[1]){
		q.push(u);
		vis[u] = true;
	}
	while(!q.empty()){
		int v = q.front(); q.pop();
		for(auto u : g[v]){
			if(!vis[u]){
				vis[u] = true;
				q.push(u);
				ans.push_back({1, 1, u});
			}
		}
	}
	for(int i = 2; i <= n; i++){
		for(auto x : g[i]){
			if(x > i){
				ans.push_back({-1, i, x});
			}
		}
	}
	return ans;
}

int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
    int n; cin>>n;
	vector<vector<int>> g1(n+1);
	vector<vector<int>> g2(n+1);
	int m1; cin>>m1;
	rep(i, m1){
		int a, b; cin>>a>>b;
		g1[a].push_back(b);
		g1[b].push_back(a);
	}
	int m2; cin>>m2;
	rep(i, m2){
		int a, b; cin>>a>>b;
		g2[a].push_back(b);
		g2[b].push_back(a);
	}
	vector<array<int, 3>> v1 = simplify(n, g1);
	vector<array<int, 3>> v2 = simplify(n, g2);
	reverse(all(v2));
	cout<<(sz(v1) + sz(v2))<<"\n";
	for(auto x : v1){
		if(x[0] > 0){
			cout<<"+ "<<x[1]<<" "<<x[2]<<"\n";
		}else{
			cout<<"- "<<x[1]<<" "<<x[2]<<"\n";
		}
	}
	for(auto x : v2){
		if(x[0] < 0){
			cout<<"+ "<<x[1]<<" "<<x[2]<<"\n";
		}else{
			cout<<"- "<<x[1]<<" "<<x[2]<<"\n";
		}
	}
	return 0;
}