using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("2 3 1");
            WillReturn.Add("1 1");
            WillReturn.Add("1 2");
            WillReturn.Add("2 2");
            WillReturn.Add("1 2");
            //3
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("10 3 2");
            WillReturn.Add("1 5");
            WillReturn.Add("2 8");
            WillReturn.Add("7 10");
            WillReturn.Add("1 7");
            WillReturn.Add("3 10");
            //1
            //1
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("10 10 10");
            WillReturn.Add("1 6");
            WillReturn.Add("2 9");
            WillReturn.Add("4 5");
            WillReturn.Add("4 7");
            WillReturn.Add("4 7");
            WillReturn.Add("5 8");
            WillReturn.Add("6 6");
            WillReturn.Add("6 7");
            WillReturn.Add("7 9");
            WillReturn.Add("10 10");
            WillReturn.Add("1 8");
            WillReturn.Add("1 9");
            WillReturn.Add("1 10");
            WillReturn.Add("2 8");
            WillReturn.Add("2 9");
            WillReturn.Add("2 10");
            WillReturn.Add("3 8");
            WillReturn.Add("3 9");
            WillReturn.Add("3 10");
            WillReturn.Add("1 10");
            //7
            //9
            //10
            //6
            //8
            //9
            //6
            //7
            //8
            //10
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        int[] wkArr = { };
        Action<string> SplitAct = pStr =>
            wkArr = pStr.Split(' ').Select(X => int.Parse(X)).ToArray();

        SplitAct(InputList[0]);

        int N = wkArr[0];
        int M = wkArr[1];

        int UB = N;
        int[,] RuisekiwaArr = new int[UB + 1, UB + 1];

        foreach (string EachStr in InputList.Skip(1).Take(M)) {
            SplitAct(EachStr);
            RuisekiwaArr[wkArr[0], wkArr[1]]++;
        }
        //PrintArr(RuisekiwaArr);

        // 横方向の累積和を求める
        for (int LoopR = 0; LoopR <= UB; LoopR++) {
            for (int LoopL = 0; LoopL <= UB; LoopL++) {
                if (LoopL > 0) {
                    RuisekiwaArr[LoopL, LoopR] += RuisekiwaArr[LoopL - 1, LoopR];
                }
            }
        }

        // 縦方向の累積和を求める
        for (int LoopL = 0; LoopL <= UB; LoopL++) {
            for (int LoopR = 0; LoopR <= UB; LoopR++) {
                if (LoopR > 0) {
                    RuisekiwaArr[LoopL, LoopR] += RuisekiwaArr[LoopL, LoopR - 1];
                }
            }
        }

        // クエリに回答する
        foreach (string EachStr in InputList.Skip(1 + M)) {
            SplitAct(EachStr);
            int QueryL = wkArr[0];
            int QueryR = wkArr[1];

            int Answer = RuisekiwaArr[QueryR, QueryR];
            Answer -= RuisekiwaArr[QueryL - 1, QueryR];
            Answer -= RuisekiwaArr[QueryR, QueryL - 1];
            Answer += RuisekiwaArr[QueryL - 1, QueryL - 1];
            Console.WriteLine(Answer);
        }
    }

    static void PrintArr(int[,] pArr)
    {
        for (int Y = 0; Y <= pArr.GetUpperBound(1); Y++) {
            for (int X = 0; X <= pArr.GetUpperBound(0); X++) {
                Console.Write("{0},", pArr[X, Y]);
            }
            Console.WriteLine();
        }
    }
}


Measured memory_bytes: 65296