Language: C++

/**
 *    author:  otera    
**/
#include<iostream>
#include<string> 
#include<cstdio>
#include<cstring>
#include<vector>
#include<cmath>
#include<algorithm> 
#include<functional>
#include<iomanip>
#include<queue>
#include<deque>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
using namespace std;

#define int long long
typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
typedef long double ld;
const int inf=1e9+7;
const ll INF=1LL<<60 ;
const ll mod=1e9+7 ;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<int, int> P;
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back
#define debug(x)  cerr << #x << " = " << (x) << endl;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

void solve() {
	int n; cin >> n;
    // vector<int> v(n, 1), w(n, 2);
    // v[0] = 100;
    vector<int> v(n), w(n);
    rep(i, n) {
        cin >> v[i] >> w[i];
    }
    int q; cin >> q;
    vector<vector<P>> res((1<<9), vector<P>());
    for(int bit = (1<<9) - 1; bit <= (1<<10) - 2; ++ bit) {
        if(bit >= n) break;
        int now = bit;
        vector<P> a;
        a.pb(P{w[now], v[now]});
        while(now != 0) {
            now = (now - 1) / 2;
            a.pb(P{w[now], v[now]});
            //if(now == 0) cerr << bit << endl; 
        }
        //cerr << (int)a.size() << endl;
        int k = bit - ((1<<9) - 1);
        rep(i, (1<<10)) {
            int sw = 0, sv = 0;
            rep(j, 10) {
                if(i & (1<<j)) {
                    sw += a[j].fr;
                    sv += a[j].sc;
                }
            }
            cerr << sw << " " << sv << endl;
            if(sw > 100000) continue;
            res[k].pb(P{sw, sv});
        }
        sort(all(res[k]));
        res[k].erase(unique(res[k].begin(), res[k].end()), res[k].end());
        //cerr << res[k].size() << " " << res[k].back().sc << endl;
    }
    while(q--) {
        int e, l; cin >> e >> l; -- e;
        int now = e;
        vector<int> es;
        es.pb(now);
        int mid = -1;
        if((1<<9) - 1 <= now && now <= (1<<10) - 2) mid = (int)es.size() - 1;
        while(now != 0) {
            now = (now - 1) / 2;
            es.pb(now);
            if((1<<9) - 1 <= now && now <= (1<<10) - 2) mid = (int)es.size() - 1;
        }
        if(mid == -1) {
            int ans = 0;
            int sz = (int)es.size();
            rep(i, (1<<sz)) {
                int sw = 0, sv = 0;
                rep(j, sz) {
                    if(i & (1<<j)) sw += w[es[j]];
                    if(i & (1<<j)) sv += v[es[j]];
                }
                if(sw <= l) {
                    chmax(ans, sv);
                }
            }
            cout << ans << endl;
        } else if(mid == 0) {
            int ans = 0;
            //assert((1<<9) > (es[0] - ((1<<9) - 1)));
          int k = es[mid] - ((1<<9) - 1);
            auto ite = upper_bound(all(res[k]), P{l - sw, INF});
                if(ite == res[k].begin()) continue;
                -- ite;
                int tv = (*ite).sc;
                chmax(ans, sv + tv);
            cout << ans << endl;
        } else {
            int sz = mid;
            int ans = 0;
            int k = es[mid] - ((1<<9) - 1);
            
            cout << ans << endl;
        }
    }
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	//cout << fixed << setprecision(10);
	//int t; cin >> t; rep(i, t)solve();
	solve();
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:123:55: error: 'sw' was not declared in this scope; did you mean 'w'?
  123 |             auto ite = upper_bound(all(res[k]), P{l - sw, INF});
      |                                                       ^~
      |                                                       w
a.cc:123:62: error: no matching function for call to 'std::pair<long long int, long long int>::pair(<brace-enclosed initializer list>)'
  123 |             auto ite = upper_bound(all(res[k]), P{l - sw, INF});
      |                                                              ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:4:
/usr/include/c++/14/bits/stl_pair.h:913:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  913 |         explicit constexpr pair(pair<_U1, _U2>&& __p)
      |                            ^~~~
/usr/include/c++/14/bits/stl_pair.h:913:28: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_pair.h:902:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  902 |         constexpr pair(pair<_U1, _U2>&& __p)
      |                   ^~~~
/usr/include/c++/14/bits/stl_pair.h:902:19: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_pair.h:891:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && (! _ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  891 |         explicit constexpr pair(_U1&& __x, _U2&& __y)
      |                            ^~~~
/usr/include/c++/14/bits/stl_pair.h:891:28: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:881:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && _ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  881 |         constexpr pair(_U1&& __x, _U2&& __y)
      |                   ^~~~
/usr/include/c++/14/bits/stl_pair.h:881:19: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:869:9: note: candidate: 'template<class _U2, typename std::enable_if<std::__and_<std::is_pointer<long long int>, std::__not_<std::is_reference<_Tp> >, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::__not_<std::is_convertible<_Iter, long long int> > >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(__zero_as_null_pointer_constant, _U2&&, ...) [with typename std::enable_if<std::__and_<std::is_pointer<_Tp>, std::__not_<std::is_reference<_U1> >, std::is_constructible<_T2, _U2>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::__not_<std::is_convertible<_U2, _T2> > >::value, bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  869 |         pair(__zero_as_null_pointer_constant, _U2&& __y, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:869:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:856:9: note: candidate: 'template<class _U2, typename std::enable_if<std::__and_<std::is_pointer<long long int>, std::__not_<std::is_reference<_Tp> >, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::is_convertible<_Iter, long long int> >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(__zero_as_null_pointer_constant, _U2&&, ...) [with typename std::enable_if<std::__and_<std::is_pointer<_Tp>, std::__not_<std::is_reference<_U1> >, std::is_constructible<_T2, _U2>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::is_convertible<_U2, _T2> >::value, bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  856 |         pair(__zero_as_null_pointer_constant, _U2&& __y, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:856:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:843:9: note: candidate: 'template<class _U1, typename std::enable_if<std::__and_<std::__not_<std::is_reference<_Tp> >, std::is_pointer<long long int>, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::__not_<std::is_convertible<_Iter, long long int> > >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, __zero_as_null_pointer_constant, ...) [with typename std::enable_if<std::__and_<std::__not_<std::is_reference<_U1> >, std::is_pointer<_T2>, std::is_constructible<_T1, _U1>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::__not_<std::is_convertible<_Iter, _Iterator> > >::value, bool>::type <anonymous> = _U1; _T1 = long long int; _T2 = long long int]'
  843 |         pair(_U1&& __x, __zero_as_null_pointer_constant, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:843:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:830:9: note: candidate: 'template<class _U1, typename std::enable_if<std::__and_<std::__not_<std::is_reference<_Tp> >, std::is_pointer<long long int>, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::is_convertible<_Iter, long long int> >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, __zero_as_null_pointer_constant, ...) [with typename std::enable_if<std::__and_<std::__not_<std::is_reference<_U1> >, std::is_pointer<_T2>, std::is_constructible<_T1, _U1>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::is_convertible<_Iter, _Iterator> >::value, bool>::type <anonymous> = _U1; _T1 = long long int; _T2 = long long int]'
  830 |         pair(_U1&& __x, __zero_as_null_pointer_constant, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:830:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:789:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(const std::pair<_U1, _U2>&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  789 |         explicit constexpr pair(const pair<_U1, _U2>& __p)
      |                            ^~~~
/usr/include/c++/14/bits/stl_pair.h:789:28: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_pair.h:779:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyConvertiblePair<_U1, _U2>()), bool>::type <anonymou