#include <bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC target("avx,avx2,fma")
#define sz(x) (x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
using namespace std;
using ll = long long;
using db = long double; // or double, if TL is tight
using str = string;
using ii = pair<int, int>;
using pl = pair<ll, ll>;
using vi = vector<int>;
using vll = vector<ll>;
int main() {
cin.tie(0);
ios_base::sync_with_stdio(0);
int n;
cin >> n;
vector<ii> S;
for(int i = 0; i < n; ++i) {
int l, r;
cin >> l >> r;
--l; --r;
S.push_back({l, r});
}
int q;
cin >> q;
for(int nrq = 0; nrq < q; ++nrq) {
vector<vi> DP(n, vi(n, -1));
int x0;
cin >> x0;
--x0;
DP[x0][x0] = 0;
for(int len = 1; len <= n; ++len) {
for(int i = 0; i < n; ++i) {
int j = i + len - 1;
if(j >= n || DP[i][j] == -1) continue;
for(int k = i; k <= j; ++k) {
int ni = min(i, S[k].first), nj = max(j, S[k].second);
if(DP[ni][nj] == -1 || DP[ni][nj] > 1 + DP[i][j]) {
DP[ni][nj] = DP[i][j] + 1;
}
}
}
}
cout << DP[0][n - 1] << "\n";
}
return 0;
}
