#include <bits/stdc++.h>
using namespace std;
#define pii pair <int, int>
#define fi first
#define se second
#define mp make_pair
const int NM = 2e5, inf = 1e9+7;
int N, Q, L[NM+5], R[NM+5];
vector <pii> adj[4*NM+5];
int dist[2][4*NM+5];
priority_queue <pii, vector <pii>, greater <pii> > pq;
int res[4*NM+5];
void update(int id, int l, int r, int u, int v, int x){
if (v < l || u > r) return;
if (l >= u && r <= v){
if (l == r){
adj[l].push_back(mp(x, 1));
}
else{
adj[N+id].push_back(mp(x, 1));
}
return;
}
int mid = (l+r)/2;
update(2*id, l, mid, u, v, x);
update(2*id+1, mid+1, r, u, v, x);
}
void solve(int id, int l, int r){
if (l == r) return;
int mid = (l+r)/2;
solve(2*id, l, mid);
solve(2*id+1, mid+1, r);
adj[(l < mid ? N+2*id : l)].push_back(mp(N+id, 0));
adj[(mid+1 < r ? N+2*id+1 : r)].push_back(mp(N+id, 0));
}
void binary_bfs(int s, int dist[NM+5]){
for (int i = 1; i <= 4*N; i++) dist[i] = +inf;
dist[s] = 0;
pq.push(mp(0, s));
while (!pq.empty()){
int u = pq.top().se;
if (dist[u] != pq.top().fi){
pq.pop();
continue;
}
pq.pop();
for (pii p : adj[u]){
int v = p.fi, w = p.se;
if (dist[u]+w >= dist[v]) continue;
dist[v] = dist[u]+w;
pq.push(mp(dist[v], v));
}
}
}
void dijkstra(){
for (int i = 1; i <= 4*N; i++){
res[i] = min(dist[0][i]+dist[1][i], +inf);
pq.push(mp(res[i], i));
}
while (!pq.empty()){
int u = pq.top().se;
if (res[u] != pq.top().fi){
pq.pop();
continue;
}
pq.pop();
for (pii p : adj[u]){
int v = p.fi, w = p.se;
if (res[u]+w >= res[v]) continue;
res[v] = res[u]+w;
pq.push(mp(res[v], v));
}
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N;
for (int i = 1; i <= N; i++){
cin >> L[i] >> R[i];
update(1, 1, N, L[i], R[i], i);
}
solve(1, 1, N);
binary_bfs(1, dist[0]);
binary_bfs(N, dist[1]);
dijkstra();
cin >> Q;
while (Q--){
int X; cin >> X;
if (res[X] == +inf) cout << -1; else cout << res[X];
cout << '\n';
}
return 0;
}
