#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("sse4")
using namespace std;
const long long N = 2e5 + 11;
const long long M = 1e6 + 21;
const long long big = 1e17;
const long long hsh2 = 1964325029;
const long long mod = 1e9 + 7;
const double EPS = 1e-9;
const long long block = 100;
const long long shift = 2e3;
const double pi = acos(-1.0);
mt19937_64 bruh(chrono::steady_clock::now().time_since_epoch().count());
long long n, k;
long long x[N], y[N];
long long q, answ[N];
vector<long long> g[N], ng[N], bg[N];
vector<pair<long long, long long> > que[N];
long long dp[N], sum[N];
long long potential[N], sub[N];
long long tin[N], arr[N];
void prec(long long v, long long p = 0) {
  tin[v] = ++tin[0];
  arr[tin[v]] = v;
  for (auto u : g[v])
    if (u != p) prec(u, v), bg[v].push_back(u);
}
void calc_potentials(long long v, long long p) {
  potential[v] = 1;
  long long second = 0;
  for (auto u : g[v]) {
    if (u != p) calc_potentials(u, v), second += potential[u];
  }
  potential[v] = max(1ll, second - block);
}
void build(long long v, long long p) {
  for (auto u : g[v]) {
    if (u == p) continue;
    if (potential[u] >= block)
      ng[v].push_back(u);
    else
      sub[v]++;
    build(u, v);
  }
}
void naive(long long v) {
  long long answ = sub[v];
  dp[v] = 1;
  sum[v] = sub[v];
  for (auto u : ng[v]) {
    naive(u);
    sum[v] += dp[u];
  }
  dp[v] = max(1ll, sum[v] - k);
}
int main() {
  ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  cin >> n;
  for (int i = 1; i < n; i++) {
    long long a, b;
    cin >> a >> b;
    g[a].push_back(b);
    g[b].push_back(a);
  }
  cin >> q;
  for (int i = 1; i <= q; i++) {
    long long v, k;
    cin >> v >> k;
    que[k].push_back(make_pair(v, i));
  }
  prec(1, 0);
  for (int j = 0; j <= block; j++) {
    k = j;
    for (int j = n; j >= 1; j--) {
      long long v = arr[j];
      dp[v] = 0;
      sum[v] = 0;
      for (auto u : bg[v]) sum[v] += dp[u];
      dp[v] = max(1ll, sum[v] - k);
    }
    for (auto u : que[j]) answ[u.second] = sum[u.first];
  }
  calc_potentials(1, 0);
  build(1, 0);
  for (int j = block + 1; j <= 200000; j++) {
    for (auto u : que[j]) {
      k = j;
      naive(u.first);
      answ[u.second] = sum[u.first];
    }
  }
  for (int i = 1; i <= q; i++) cout << answ[i] << '\n';
}
