#include <bits/stdc++.h>
using namespace std;
#define POPCOUNT(n) (__builtin_popcountll((n)))
#define CLZ(n) (__builtin_clzll((n)))
#define CTZ(n) (__builtin_ctzll((n)))
#define LOG(n) (63 - __builtin_clzll((n)))
#define BIT(n, i) (((n) >> (i)) & 1ll)
#define MASK(i) (1ll << (i))
#define FLIP(n, i) ((n) ^ (1ll << (i)))
#define ON(n, i) ((n) | MASK(i))
#define OFF(n, i) ((n) & ~MASK(i))
#define Int __int128
#define fi first
#define se second
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long long, int> pli;
typedef pair<int, long long> pil;
typedef vector<pair<int, int>> vii;
typedef vector<pair<long long, long long>> vll;
typedef vector<pair<long long, int>> vli;
typedef vector<pair<int, long long>> vil;
template <class T1, class T2> bool maximize(T1 &x, T2 y) {
if (x < y) {
x = y;
return true;
}
return false;
}
template <class T1, class T2> bool minimize(T1 &x, T2 y) {
if (x > y) {
x = y;
return true;
}
return false;
}
template <class T> void remove_duplicate(vector<T> &ve) {
sort (ve.begin(), ve.end());
ve.resize(unique(ve.begin(), ve.end()) - ve.begin());
}
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
long long random(long long l, long long r) {
return uniform_int_distribution<long long>(l, r)(rng);
}
unsigned long long random(unsigned long long l, unsigned long long r) {
return uniform_int_distribution<unsigned long long>(l, r)(rng);
}
template <class T> T random(T r) {
return rng() % r;
}
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
const int inf = 1e9;
const long long INF = 1e18;
int n, q, maxNode;
int L[N], R[N], nodeId[N], dist[4 * N];
vii adj[4 * N];
void build(int id, int l, int r) {
maximize(maxNode, id);
if (l == r) {
nodeId[l] = id;
return;
}
int mid = (l + r) >> 1;
build(id << 1, l, mid);
build(id << 1 | 1, mid + 1, r);
adj[id].emplace_back(id << 1, 0);
adj[id].emplace_back(id << 1 | 1, 0);
}
void add(int id, int l, int r, int u, int v, int x) {
if (l > v || r < u) return;
if (u <= l && r <= v) {
adj[x].emplace_back(id, 1);
return;
}
int mid = (l + r) >> 1;
add(id << 1, l, mid, u, v, x);
add(id << 1 | 1, mid + 1, r, u, v, x);
}
int solve(int s) {
for (int j = 1; j <= maxNode; ++j) dist[j] = inf;
deque<int> q; q.emplace_back(nodeId[s]); dist[nodeId[s]] = 0;
while (!q.empty()) {
int u = q.front(); q.pop_front();
for (auto [v, w] : adj[u]) if (minimize(dist[v], dist[u] + w)) {
if (w == 0) q.emplace_front(v);
else q.emplace_back(v);
}
}
int ans = 0;
for (int i = 1; i <= n; ++i) maximize(ans, dist[nodeId[i]]);
return (ans == inf ? -1 : ans);
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
cin >> n;
build(1, 1, n);
for (int i = 1; i <= n; ++i) {
cin >> L[i] >> R[i];
add(1, 1, n, L[i], R[i], nodeId[i]);
}
cin >> q;
for (int i = 1; i <= q; ++i) {
int u; cin >> u;
cout << solve(u) << '\n';
}
return 0;
}
