#include <bits/stdc++.h>
#include <random>

using namespace std;

typedef unsigned long long ull;
typedef long long ll;
typedef double ld;
//#define ll __int128
//#define int ll
//#define char ll
#define double ld
typedef vector<char> vc;
typedef vector<vc> vvc;
typedef vector<vvc> vvvc;
typedef pair<int, int> pii;
typedef pair<pii, pii> piii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vpi;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<short> vs;
typedef vector<vs> vvs;
typedef vector<vvs> vvvs;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<vvl> vvvl;
typedef vector<ld> vld;
typedef vector<vld> vvld;
typedef vector<vvld> vvvld;
typedef vector<string> vst;
typedef vector<vst> vvst;
typedef pair<ld, ld> pld;

#define inmin(a, b) a = min(a, (b))
#define inmax(a, b) a = max(a, (b))
#define ALL(a) a.begin(),a.end()
#define RALL(a) a.rbegin(),a.rend()
#define sqr(x) ((x) * (x))
#define fori(i, n) for(int i = 0; i < int(n); ++i)
#define SZ(a) ((int)((a).size()))
#define triple(T) tuple<T, T, T>
#define quad(T) tuple<T, T, T, T>
#define watch(x) cerr << (#x) << " = " << (x) << endl;

#ifdef MAX_HOME
#define cerr cout
#else
#define cerr if (false) cerr
#endif

const double PI = 2 * acos(0.0);
//#define rand shittttty_shit
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng_64(chrono::steady_clock::now().time_since_epoch().count());

const string DIGITS = "0123456789";
const string ALPH = "abcdefghijklmnopqrstuvwxyz";


template<class T0, class T1>
inline ostream &operator<<(ostream &out, pair<T0, T1> &a) {
    return out << "{" << a.first << ", " << a.second << "}";
}

template<class T0, class T1>
inline istream &operator>>(istream &in, pair<T0, T1> &a) {
    return in >> a.first >> a.second;
}

template<class T0, class T1, class T2>
inline ostream &operator<<(ostream &out, tuple<T0, T1, T2> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << "}";
}

template<class T0, class T1, class T2, class T3>
inline ostream &operator<<(ostream &out, tuple<T0, T1, T2, T3> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << ", " << get<3>(a) << "}";
}

template<class T>
inline ostream &operator<<(ostream &out, vector<T> &a) {
    out << "[";
    fori (i, a.size())out << a[i] << vector<string>{", ", "]  "}[i + 1 == a.size()];
    return out;
}


void smain();


signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
#ifdef MAX_HOME
    freopen("input.txt", "r", stdin);
    clock_t start = clock();
#endif
    cout << setprecision(12) << fixed;
    smain();
#ifdef MAX_HOME
    cout << "\n\nTOTAL EXECUTION TIME: " << float(clock() - start) / CLOCKS_PER_SEC << endl;
#endif
    return 0;
}

const int N = 1 << 18;
const int S = 1 << 10;
const int W = 1e5 + 2;
int w[N], p[N];

int dp[S][W];

void dfs(int v) {
    for (int to : {v << 1, v << 1 | 1}) {
        if (to >= S)
            continue;
        fori (cw, W) {
            dp[to][cw] = dp[v][cw];
            if (cw)
                inmax(dp[to][cw], dp[to][cw - 1]);
            if (cw - w[to] >= 0)
                inmax(dp[to][cw], dp[v][cw - w[to]] + p[to]);
        }
        dfs(to);
    }
}

void smain() {

    int n;
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        cin >> p[i] >> w[i];
    }
    dp[1][0] = 0;
    for (int i = w[1]; i < W; ++i) {
        dp[1][i] = p[1];;
    }
    dfs(1);
    int q;
    cin >> q;
    while (q--) {
        int v, L;
        cin >> v >> L;
        vi verts;
        while (v >= S) {
            verts.push_back(v);
            v >>= 1;
        }
        int ans = 0;
        fori (mask, 1 << SZ(verts)) {
            int curw = 0, curp = 0;
            fori (i, SZ(verts)) if ((mask >> i) & 1){
                curw += w[verts[i]];
                curp += p[verts[i]];
            }
            curw = L - curw;
            if (curw >= 0) {
                inmax(ans, dp[v][curw] + curp);
            }
        }
        cout << ans << '\n';
    }
}

Measured memory_bytes: 405308