#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "deb.h"
#else
#define debug(...) 
#endif
const int inf = 1e9;
void solve() {
  int n;
  cin >> n;
  vector<int> l(n), r(n);
  for (int i = 0; i < n; i++) {
    cin >> l[i] >> r[i];
    --l[i]; --r[i];
  }
  vector<vector<int>> dp(n, vector<int>(n, inf));
  int q;
  cin >> q;
  while (q--) {
    int x;
    cin >> x;
    --x;
    dp[x][x] = 0;
    for (int length = 1; length <= n; length++) {
      for (int i = 0; i < n - length + 1; i++) {
        for (int j = i; j <= i + length - 1; j++) {
          dp[min(i, l[j])][max(i, r[j])] = min(dp[min(i, l[j])][max(i, r[j])], dp[i][i + length - 1] + 1);
        }
      }
    }
    cout << ((dp[0][n - 1] == inf) ? -1 : dp[0][n - 1]) << '\n';
  }
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int t = 1;
  // cin >> t;
  while (t--) {
    solve();
  }
  return 0;
}
| # | Verdict | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict | Execution time | Memory | Grader output | 
|---|
| Fetching results... |