#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define FOR(i,a,b) for (int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(x) (x).begin(),(x).end()
const long long MOD=1e9+7;
// const long long MOD=998244353;
const int INF=1e9;
const long long IINF=1e18;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
const char dir[4]={'D','R','U','L'};
#define LOCAL

template<typename T>
istream &operator>>(istream &is,vector<T> &v){
    for (T &x:v) is >> x;
    return is;
}
template<typename T>
ostream &operator<<(ostream &os,const vector<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const pair<T,U> &p){
    cout << '(' << p.first << ',' << p.second << ')';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();++itr){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
        --itr;
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();++itr){
        os << *itr;
        if (++itr!=s.end()) os << ',';
        --itr;
    }
    os << '}';
    return os;
}

void debug_out(){cerr << '\n';}
template<class Head,class... Tail>
void debug_out(Head&& head,Tail&&... tail){
    cerr << head;
    if (sizeof...(Tail)>0) cerr << ", ";
    debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) cerr << " ";\
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\
cerr << " ";\
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;}
template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;}

template<class T1,class T2> inline bool chmin(T1 &a,T2 b){
    if (a>b){a=b; return true;} return false;
}
template<class T1,class T2> inline bool chmax(T1 &a,T2 b){
    if (a<b){a=b; return true;} return false;
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N; cin >> N;
    vector<int> V(N+1),W(N+1);
    for (int i=1;i<=N;++i) cin >> V[i] >> W[i];
    int half=1<<10;
    vector<vector<int>> use(half);
    for (int mask=0;mask<(half);++mask){
        for (int i=0;i<10;++i){
            if (mask&1<<i){
                use[mask].emplace_back(i);
            }
        }
    }
    vector<vector<pair<int,int>>> dp_small(half);
    for (int mask=1;mask<min(N+1,half);++mask){
        vector<int> pv,pw;
        int v=mask;
        for (;;v>>=1){
            pv.emplace_back(V[v]);
            pw.emplace_back(W[v]);
            if (v==1) break;
        }
        int n=pv.size();
        for (int bit=0;bit<(1<<n);++bit){
            int sumv=0,sumw=0;
            for (int x:use[bit]){
                if (x>=n) break;
                sumv+=pv[x]; sumw+=pw[x];
            }
            dp_small[mask].emplace_back(sumw,sumv);
        }
        sort(ALL(dp_small[mask]));
        for (int i=0;i+1<dp_small[mask].size();++i){
            chmax(dp_small[mask][i+1].second,dp_small[mask][i].second);
        }
    }
    int Q; cin >> Q;
    for (;Q--;){
        int v,L; cin >> v >> L;
        if (v<half){
            int ans=0;
            for (auto x:dp_small[v]){
                if (x.first<=L) chmax(ans,x.second);
                else break;
            }
            cout << ans << '\n';
            continue;
        }
        vector<int> pv,pw;
        for (;v>=half;v>>=1){
            pv.emplace_back(V[v]);
            pw.emplace_back(W[v]);
        }
        int n=pv.size();
        vector<pair<int,int>> dp;
        for (int bit=0;bit<(1<<n);++bit){
            int sumv=0,sumw=0;
            for (int x:use[bit]){
                if (x>=n) break;
                sumv+=pv[x]; sumw+=pw[x];
            }
            if (sumw>L) continue;
            dp.emplace_back(sumw,sumv);
        }
        sort(ALL(dp));
        int now=dp_small[v].size()-1,ans=0;
        for (int i=0;i<dp.size();++i){
            while(now>=0&&dp_small[v][now].first>L-dp[i].first) --now;
            chmax(ans,dp[i].second+dp_small[v][now].second);
        }
        cout << ans << '\n';
    }
}

Measured memory_bytes: 10864