#![allow(unused, non_snake_case, dead_code, non_upper_case_globals)]
use std::cmp::*;
use std::collections::*;
use std::mem::*;

//写経 from tourist
fn main() {
    let (r, w, e) = (std::io::stdin(), std::io::stdout(), std::io::stderr());
    let mut io = IO::new(r.lock(), w.lock(), e.lock());
    let n: usize = io.read();
    let vw = (0..n)
        .map(|_| (io.read::<usize>(), io.read::<usize>()))
        .collect::<Vec<_>>();
    let limit = min(1024, n); // 最大の半分
    let mut dp = vec![vec![0usize; MX]; limit];

    for i in 0..MX {
        dp[0][i] = if i >= vw[0].1 { vw[0].0 } else { 0 };
    }
    // 普通にナップサックぽい
    for i in 1..limit {
        let p = (i - 1) / 2;
        for j in 0..MX {
            dp[i][j] = dp[p][j];
            if j >= vw[i].1 {
                dp[i][j] = max(dp[i][j], dp[p][j - vw[i].1] + vw[i].0);
            }
        }
    }
    let tt = io.read::<usize>();
    for _ in 0..tt {
        let (ver, L) = (io.read::<usize>(), io.read::<usize>());
        let mut ver = ver - 1;
        let mut ids = Vec::new();
        // 過ぎてるやつ
        while ver >= limit {
            ids.push(ver);
            ver = (ver - 1) / 2;
        }
        let sz = ids.len();
        let mut ans = 0;
        // 2^(k/2) * (k/2) ->9 * sqrt(n)
        for t in 0..(1 << sz) {
            let mut sv = 0;
            let mut sw = 0;
            for (i, &itm) in ids.iter().enumerate() {
                if ((t >> i) & 1) == 1 {
                    sv += vw[itm].0;
                    sw += vw[itm].1;
                }
            }
            if sw <= L {
                ans = max(ans, dp[ver][L - sw] + sv);
            }
        }
        io.writeln(ans);
    }
}

static MX: usize = 100001;
// IO
use std::io::*;
struct IO<R: Read, W: Write, E: Write> {
    Read: R,
    Write: BufWriter<W>,
    Error: BufWriter<E>,
}
impl<R: Read, W: Write, E: Write> IO<R, W, E> {
    fn new(r: R, w: W, e: E) -> IO<R, W, E> {
        IO {
            Read: r,
            Write: BufWriter::new(w),
            Error: BufWriter::new(e),
        }
    }
    fn read<T>(&mut self) -> T
    where
        T: std::str::FromStr,
    {
        let next: String = self
            .Read
            .by_ref()
            .bytes()
            .map(|c| c.unwrap() as char)
            .skip_while(|c| c.is_whitespace())
            .take_while(|c| !c.is_whitespace())
            .collect();
        next.parse().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
    fn chari(&mut self) -> Vec<i64> {
        self.chars()
            .iter()
            .map(|&c| (c as u8 - b'0') as i64)
            .collect::<Vec<i64>>()
    }
    fn readn<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read::<T>()).collect::<Vec<_>>()
    }
    fn readmat<T: std::str::FromStr>(&mut self, n: usize, m: usize) -> Vec<Vec<T>> {
        (0..n).map(|_| self.readn(m)).collect()
    }
    fn write<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
    }
    fn writeln<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
        self.Write.write(b"\n");
    }
    fn debug<S: std::fmt::Debug>(&mut self, val: S) {
        writeln!(self.Error, "(debug) {:?}", &val);
    }
    fn debug2<S: std::fmt::Debug, T: std::fmt::Debug>(&mut self, val1: S, val2: T) {
        writeln!(self.Error, "(debug2) {:?} -> {:?}", val1, val2);
    }
    fn debug3<S: std::fmt::Debug, T: std::fmt::Debug, U: std::fmt::Debug>(
        &mut self,
        val1: S,
        val2: T,
        val3: U,
    ) {
        writeln!(
            self.Error,
            "(debug3) {:?} -> {:?} -> {:?}",
            val1, val2, val3
        );
    }
}


Measured memory_bytes: 809640