// I SELL YOU...! 
#include<iostream>
#include<vector>
#include<algorithm>
#include<functional>
#include<queue>
#include<chrono>
#include<iomanip>
#include<map>
#include<set>
using namespace std;
using ll = int;
using P = pair<ll,ll>;
using TP = tuple<ll,ll,ll>;
void init_io(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(18);
}
ll calc(int i, vector<ll> &dp, vector<ll> &a, vector<vector<ll>> &G, vector<ll> &arr) {
  if (dp[i] != -1) return dp[i];
  if (arr[i]) {
    return dp[i] = -2;
  }
  arr[i] = 1;
  ll tmp = a[i];
  for(auto nv: G[i]) {
    ll res = calc(nv, dp, a, G, arr);
    if (res == -2) {
      tmp = res;
      break;
    }
    tmp = max(res, tmp);
  }
  arr[i] = 0;
  return dp[i] = tmp;
}
signed main(){
  init_io();
  ll n;
  cin >> n;
  vector<ll> a(n);
  vector<vector<ll>> G(n, vector<ll>());
  vector<ll> found(n, false);
  vector<ll> dp(n, -1);
  vector<ll> arr(n, 0);
  a[0] = 0;
  dp[0] = 0;
  for (int i=1;i<n;i++) {
    ll x, y;
    cin >> y >> x;
    x--;
    G[i].push_back(x);
    a[i] = y;
  }
  vector<ll> copy;
  map<ll, ll> mp;
  copy.push_back(0);
  for (int i=1;i<n;i++) {
    int tmp = calc(i, dp, a, G, arr);
    if (tmp != -2) {
      copy.push_back(tmp);
    }
  }
  sort(copy.begin(), copy.end());
  for(int i=0;i<copy.size();i++) {
    mp[copy[i]] = i+1;
  }
  int q;
  cin >> q;
  for (int i=0;i<q;i++) {
    int x,y;
    cin >> x >> y;
    if (x == 1) {
      auto itr = mp.upper_bound(y);
      itr--;
      cout << itr->second << endl;
    }
    if (x == 2) {
      if (dp[y-1] == -2) dp[y-1] = -1;
      cout << dp[y-1] << endl;
    }
  }
}