#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define sz(v) (int)v.size()
#define all(v) v.begin(), v.end()
#define filter(v) v.resize(unique(all(v)) - v.begin())
#define dbg(x) "[" #x " = " << (x) << "]"
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template<typename T> bool maximize(T &a, T b) {
if(a < b) {
a = b;
return true;
}else return false;
}
template<typename T> bool minimize(T &a, T b) {
if(a > b) {
a = b;
return true;
}else return false;
}
template<typename T> T rnd(T a, T b) {
return uniform_int_distribution<T>(a, b)(rng);
}
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, int> pli;
const int N = 1e6 + 3;
const ll INF = 1e18 + 3;
int n, q;
int numNode = 0;
vector<pii> adj[N];
map<int, int> ids[N];
void build(int id, int l, int r) {
maximize(numNode, id);
ids[l][r] = id;
if(l < r) {
int mid = (l + r) >> 1;
adj[id << 1].emplace_back(id, 0);
// cout << "Edge: " << (id << 1) << " " << id << " " << 0 << endl;
build(id << 1, l, mid);
adj[id << 1 | 1].emplace_back(id, 0);
// cout << "Edge: " << (id << 1 | 1) << " " << id << " " << 0 << endl;
build(id << 1 | 1, mid + 1, r);
}
}
void update(int id, int l, int r, int u, int v, int cid) {
if(r < u || v < l) return void();
if(u <= l && r <= v) {
adj[id].emplace_back(cid, 1);
// cout << "Edge: " << id << " " << cid << " " << 1 << endl;
return void();
}
int mid = (l + r) >> 1;
update(id << 1, l, mid, u, v, cid);
update(id << 1 | 1, mid + 1, r, u, v, cid);
}
void dijkstra(int st, vector<ll> &dist) {
dist.resize(numNode + 1, INF);
priority_queue<pli, vector<pli>, greater<pli>> pq;
dist[st] = 0; pq.emplace(0, st);
while(!pq.empty()) {
ll cost; int u; tie(cost, u) = pq.top(); pq.pop();
if(cost > dist[u]) continue;
for(pii it : adj[u]) {
int v, w; tie(v, w) = it;
if(minimize(dist[v], dist[u] + w)) {
pq.emplace(dist[v], v);
}
}
}
}
void process() {
vector<ll> fromOne, fromN, fromNode;
dijkstra(ids[1][1], fromOne); fromOne[ids[1][1]] = 1;
dijkstra(ids[n][n], fromN); fromN[ids[n][n]] = 1;
fromNode.resize(numNode + 1, INF);
priority_queue<pli, vector<pli>, greater<pli>> pq;
for(int i = 1; i <= n; i++) {
int p = ids[i][i];
if(fromOne[p] != INF && fromN[p] != INF) {
fromNode[p] = fromOne[p] + fromN[p] - 1;
pq.emplace(fromNode[p], p);
}
}
while(!pq.empty()) {
ll cost; int u; tie(cost, u) = pq.top(); pq.pop();
if(cost > fromNode[u]) continue;
for(pii it : adj[u]) {
int v, w; tie(v, w) = it;
if(minimize(fromNode[v], fromNode[u] + w)) {
pq.emplace(fromNode[v], v);
}
}
}
// for(int i = 1; i <= numNode; i++) cout << fromOne[i] << " \n"[i == numNode];
// for(int i = 1; i <= numNode; i++) cout << fromN[i] << " \n"[i == numNode];
// for(int i = 1; i <= numNode; i++) cout << (fromNode[i] == INF ? -1 : fromNode[i]) << " \n"[i == numNode];
while(q--) {
int u; cin >> u;
u = ids[u][u];
cout << (fromNode[u] == INF ? -1 : fromNode[u]) << endl;
}
}
void input() {
cin >> n;
build(1, 1, n);
for(int i = 1; i <= n; i++) {
int l, r; cin >> l >> r;
update(1, 1, n, l, r, ids[i][i]);
}
cin >> q;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
#define task "Deeto"
if(fopen(task".inp", "r")) {
freopen(task".inp", "r", stdin);
freopen(task".out", "w", stdout);
}
int testcase = 1; // cin >> testcase;
for(int i = 1; i <= testcase; i++) {
input();
process();
}
cerr << "Saa, watashtachi no deeto hajimemashou" << endl;
cerr << "Atarashii kiseki wo koko kara hajimeru shining place nee mou ichido kimi to..." << endl;
return 0;
}
/*
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*/
