#![allow(unused_imports)]
#![allow(non_snake_case, unused)]

use std::cmp::*;
use std::collections::*;
use std::ops::*;

// https://atcoder.jp/contests/hokudai-hitachi2019-1/submissions/10518254

macro_rules! eprint {
	($($t:tt)*) => {{
		use ::std::io::Write;
		let _ = write!(::std::io::stderr(), $($t)*);
	}};
}
macro_rules! eprintln {
	() => { eprintln!(""); };
	($($t:tt)*) => {{
		use ::std::io::Write;
		let _ = writeln!(::std::io::stderr(), $($t)*);
	}};
}
macro_rules! dbg {
	($v:expr) => {{
		let val = $v;
		eprintln!("[{}:{}] {} = {:?}", file!(), line!(), stringify!($v), val);
		val
	}}
}

macro_rules! mat {
	($($e:expr),*) => { Vec::from(vec![$($e),*]) };
	($($e:expr,)*) => { Vec::from(vec![$($e),*]) };
	($e:expr; $d:expr) => { Vec::from(vec![$e; $d]) };
	($e:expr; $d:expr $(; $ds:expr)+) => { Vec::from(vec![mat![$e $(; $ds)*]; $d]) };
}

macro_rules! ok {
	($a:ident$([$i:expr])*.$f:ident()$(@$t:ident)*) => {
		$a$([$i])*.$f($($t),*)
	};
	($a:ident$([$i:expr])*.$f:ident($e:expr$(,$es:expr)*)$(@$t:ident)*) => { {
		let t = $e;
		ok!($a$([$i])*.$f($($es),*)$(@$t)*@t)
	} };
}

pub fn readln() -> String {
	let mut line = String::new();
	::std::io::stdin().read_line(&mut line).unwrap_or_else(|e| panic!("{}", e));
	line
}

macro_rules! read {
	($($t:tt),*; $n:expr) => {{
		let stdin = ::std::io::stdin();
		let ret = ::std::io::BufRead::lines(stdin.lock()).take($n).map(|line| {
			let line = line.unwrap();
			let mut it = line.split_whitespace();
			_read!(it; $($t),*)
		}).collect::<Vec<_>>();
		ret
	}};
	($($t:tt),*) => {{
		let line = readln();
		let mut it = line.split_whitespace();
		_read!(it; $($t),*)
	}};
}

macro_rules! _read {
	($it:ident; [char]) => {
		_read!($it; String).chars().collect::<Vec<_>>()
	};
	($it:ident; [u8]) => {
		Vec::from(_read!($it; String).into_bytes())
	};
	($it:ident; usize1) => {
		$it.next().unwrap_or_else(|| panic!("input mismatch")).parse::<usize>().unwrap_or_else(|e| panic!("{}", e)) - 1
	};
	($it:ident; [usize1]) => {
		$it.map(|s| s.parse::<usize>().unwrap_or_else(|e| panic!("{}", e)) - 1).collect::<Vec<_>>()
	};
	($it:ident; [$t:ty]) => {
		$it.map(|s| s.parse::<$t>().unwrap_or_else(|e| panic!("{}", e))).collect::<Vec<_>>()
	};
	($it:ident; $t:ty) => {
		$it.next().unwrap_or_else(|| panic!("input mismatch")).parse::<$t>().unwrap_or_else(|e| panic!("{}", e))
	};
	($it:ident; $($t:tt),+) => {
		($(_read!($it; $t)),*)
	};
}


pub fn main() {
	let _ = ::std::thread::Builder::new().name("run".to_string()).stack_size(32 * 1024 * 1024).spawn(run).unwrap().join();
}

const MOD: u32 = 1_000_000_007;
const INF: i64 = std::i64::MAX/3;

fn solve() {
	let n = read!(usize);
	let vw = read!(usize,usize;n);
	let q = read!(usize);
	let vl = read!(usize,usize;q);
	let half = min(1<<9,n);
	let mut dp = vec![vec![0;100001];half];
	for j in vw[0].1..100001 {
		dp[0][j] = vw[0].0;
	}
	for i in 1..half {
		let p = (i+1)/2-1;
		for j in 0..100001 {
			let nw = j+vw[i].1;
			if nw<=100000{
				dp[i][nw] = max(dp[i][nw], dp[p][j]+vw[i].0);
			}
			dp[i][j] = max(dp[i][j],dp[p][j]);
		}
	}
	let mut ans = vec![0;q];
	let mut qlist = vec![];
	let mut vlist = vec![vec![];n];
	let mut seen = vec![false;q];
	let mut idx = 0;
	for (v,l) in vl {
		qlist.push((v-1,l,idx));
		vlist[v-1].push((l,idx));
		idx += 1;
	}
	qlist.sort();
	for i in (0..q).rev() {
		let v = qlist[i].0;
		let l = qlist[i].1;
		let idx = qlist[i].2;
		let mut id = v;
		if seen[idx]{
			continue;
		}
		let mut list = vec![];
		let mut p = 0;
		loop {
			if id<half {
				p = id;
				break;
			}
			list.push(id);
			id = (id+1)/2-1;
		}
		for j in 0..1<<(list.len()) {
			let mut vsum = 0;
			let mut wsum = 0;
			let mut lma = 0;
			for k in 0..list.len() {
				if (j>>k)%2==1 {
					vsum += vw[list[k]].0;
					wsum += vw[list[k]].1;
					lma = max(lma, list[k]);
				}
			}
			for &(xl,xi) in &vlist[v] {
				if wsum <= xl {
					let res = xl-wsum;
					ans[xi] = max(ans[xi], dp[p][res]+vsum);
					seen[xi] = true;
				}
			}
			// if wsum <= vlist[lma] {
			// 	let tmp_res = vlist[lma] - wsum;
			// 	ans[lma] = max(ans[lma],dp[p][tmp_res]+wsum);
			// 	vlist[lma] = 0;
			// }
		}
	}
	for a in ans {
		println!("{}",a);
	}
}

fn run() {
    solve();
}


Measured memory_bytes: 420548