using System;
using System.Collections.Generic;
using static Assistant.Input;
using static Assistant.Debug;
using System.Linq;
using Assistant;
using System.Text;

namespace 東京海上日動2020D
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = RInt;
            int[] v = new int[n + 1];
            int[] w = new int[n + 1];
            for (int i = 1; i <= n; i++)
            {
                v[i] = RInt;
                w[i] = RInt;
            }

            int L = 100001;

            int half = 11;
            int shift = 1 << half;
            int count = Math.Min(shift, n); //2*10^8
            int[,] dp = new int[count + 1, L];
            for (int i = 1; i <= count; i++)
            {
                for (int j = 0; j < L; j++)
                {
                    if (j < w[i]) dp[i, j] = dp[i / 2, j];
                    else dp[i, j] = Math.Max(dp[i / 2, j], dp[i / 2, j - w[i]] + v[i]);
                }
            }

            //Draw2D(dp);

            int Q = RInt;
            List<int> vs = new List<int>();
            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < Q; i++) // 10^5 * 2^(18-11)
            {
                int vq = RInt;
                int lq = RInt;

                vs.Clear();
                while (vq >= shift)
                {
                    vs.Add(vq);
                    vq >>= 1;
                }
                int vslast = vq;

                if (vs.Count == 0)
                {
                    sb.AppendLine(dp[vslast, lq].ToString());
                }
                else
                {
                    //bit全探索
                    int c = vs.Count;
                    int ans = 0;
                    int v2, w2;
                    for (int bit = (1 << c) - 1; bit >= 0; bit--)
                    {
                        v2 = 0;
                        w2 = 0;
                        for (int d = 0; d < c; d++)
                        {
                            if ((bit & (1 << d)) != 0)
                            {
                                //ここが遅い
                                int index = vs[d];
                                v2 += v[index];
                                w2 += w[index];
                                if (w2 > lq) break;
                            }
                        }

                        if (w2 > lq) continue;
                        int cand = dp[vslast, lq - w2] + v2;
                        if (cand > ans) ans = cand;
                    }
                    sb.AppendLine(ans.ToString());
                }
            }
            Console.Write(sb);
        }
    }
}

namespace Assistant
{
    static class Input
    {
        static List<string> line = new List<string>();
        static int index = 0;
        static String RNext()
        {
            if (line.Count <= index) line.AddRange(Console.ReadLine().Split());
            return line[index++];
        }
        public static int RInt => int.Parse(RNext());
        public static long RLong => long.Parse(RNext());
        public static int[] RInts => Console.ReadLine().Split().Select(int.Parse).ToArray();
        public static long[] RLongs => Console.ReadLine().Split().Select(long.Parse).ToArray();
        public static string RString => RNext();
        //以下未テスト
        public static int[] RIntsC(int c) => Enumerable.Repeat(0, c).Select(x => int.Parse(RNext())).ToArray();
        public static long[] RLongsC(int c) => Enumerable.Repeat(0, c).Select(x => long.Parse(RNext())).ToArray();
        public static char[][] RMap(int h) => Enumerable.Repeat(0, h).Select(x => Console.ReadLine().ToCharArray()).ToArray();
    }

    static class Debug
    {
        static public void Draw2D<T>(T[,] map, int mode = 1)
        {
#if DEBUG
            int W = map.GetLength(0);
            int H = map.GetLength(1);

            string[,] map2 = new string[W + 1, H + 1];
            for (int i = 0; i < W + 1; i++)
            {
                for (int j = 0; j < H + 1; j++)
                {
                    if (i == 0 && j == 0) map2[i, j] = 0.ToString();
                    else if (i == 0) map2[i, j] = (j - 1).ToString();
                    else if (j == 0) map2[i, j] = (i - 1).ToString();
                    else map2[i, j] = map[i - 1, j - 1].ToString();
                }
            }

            for (int i = 0; i < W + 1; i++)
            {
                for (int j = 0; j < H + 1; j++)
                {
                    if (mode == 0) Console.Write(map2[i, j].Last());
                    if (mode == 1) Console.Write(map2[i, j] + " ");
                }
                Console.WriteLine();
            }
            Console.WriteLine();
#endif
        }

        public static void Draw1D<T>(T[] array, int mode = 0)
        {
#if DEBUG
            Console.WriteLine(string.Join(" ", array));
#endif
        }
    }
}


Measured memory_bytes: 876488