#include<bits/stdc++.h>
#define int long long
using namespace std;
struct Point
{
int x, y;
Point(int x, int y): x(x), y(y){}
Point operator -(Point &p)
{
return Point(x-p.x, y-p.y);
}
int cross(Point &p)
{
return x*p.y - y*p.x;
}
int half()
{
if(y > 0 || (y == 0 && x > 0)) return 0;
else return 1;
}
};
vector<Point> p;
vector<vector<int>> ad, used;
vector<vector<int>> find_all_faces(int n)
{
for(int i = 1; i <= n; i++){
used[i].resize(ad[i].size());
sort(ad[i].begin(), ad[i].end(), [&](const int x, const int y){
Point px = p[x] - p[i], py = p[y] - p[i];
if(px.half() != py.half()) return px.half() < py.half();
else return px.cross(py) > 0;
});
}
vector<vector<int>> ans;
for(int i = 1; i <= n; i++){
for(int j = 0; j < ad[i].size(); j++) if(used[i][j] == 0){
int u = i, e = j, sum = 0;
vector<int> cur;
while(used[u][e] == 0){
cur.push_back(u);
used[u][e] = 1;
int v = ad[u][e];
e = lower_bound(ad[v].begin(), ad[v].end(), u, [&](const int x, const int y){
Point px = p[x] - p[v], py = p[y] - p[v];
if(px.half() != py.half()) return px.half() < py.half();
else return px.cross(py) > 0;
}) - ad[v].begin() + 1;
if(e == ad[v].size()) e = 0;
sum += p[u].cross(p[v]);
u = v;
}
if(sum < 0) ans.push_back(cur);
}
}
return ans;
}
vector<int> adbfs[200005], in_face[200005];
int dis[200005];
map<pair<int, int>, int> f;
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
int n; cin>>n;
p.emplace_back(0, 0);
for(int i = 1; i <= n; i++){
int x, y; cin>>x>>y;
p.emplace_back(x, y);
}
ad.resize(n+5); used.resize(n+5);
int m; cin>>m;
for(int i = 1; i <= m; i++){
int u, v; cin>>u>>v;
if(u > v) swap(u, v);
f[{u, v}] = i;
ad[u].push_back(v);
ad[v].push_back(u);
}
vector<vector<int>> faces = find_all_faces(n);
/*for(auto &i : faces){
cerr<<"A"<<endl;
for(int j : i) cerr<<j<<" ("<<p[j].x<<", "<<p[j].y<<")"<<endl;
cerr<<endl;
}*/
for(int i = 0; i < faces.size(); i++){
vector<int> &cur = faces[i];
for(int j = 0; j < cur.size(); j++){
int u = cur[j], v = cur[(j+1)%cur.size()];
if(u > v) swap(u, v);
in_face[f[{u, v}]].push_back(i+1);
}
}
for(int i = 1; i <= m; i++) while(in_face[i].size() < 2) in_face[i].push_back(0);
for(int i = 1; i <= m; i++){
int u = in_face[i][0], v = in_face[i][1];
//cerr<<"A"<<u<<" "<<v<<endl;
adbfs[u].push_back(v);
adbfs[v].push_back(u);
}
memset(dis, 0x3f, sizeof(dis));
dis[0] = 0; queue<int> w; w.push(0);
while(w.size() > 0){
int u = w.front(); w.pop();
for(int v : adbfs[u]) if(dis[v] > dis[u] + 1){
dis[v] = dis[u] + 1;
w.push(v);
}
}
vector<int> ans;
for(int i = 1; i <= m; i++){
int u = in_face[i][0], v = in_face[i][1];
if(dis[u] == dis[v]) ans.push_back(i);
}
cout<<ans.size()<<'\n';
for(int i : ans) cout<<i<<'\n';
}
