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("7 2");
            WillReturn.Add("0 0 1");
            WillReturn.Add("1 0 1");
            WillReturn.Add("1 1 2");
            WillReturn.Add("1 2 1");
            WillReturn.Add("2 0 1");
            WillReturn.Add("2 1 1");
            WillReturn.Add("2 2 1");
            WillReturn.Add("-1 -1 2 2 1");
            WillReturn.Add("1 0 1 2 1");
            //0
            //すべての敵を倒したので残り体力の合計は0
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("4 1");
            WillReturn.Add("1 0 1");
            WillReturn.Add("1 2 1");
            WillReturn.Add("2 0 2");
            WillReturn.Add("2 1 1");
            WillReturn.Add("-1 -1 3 3 2");
            //0
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("4 1");
            WillReturn.Add("1 0 2");
            WillReturn.Add("1 2 1");
            WillReturn.Add("2 0 1");
            WillReturn.Add("2 1 1");
            WillReturn.Add("-1 0 3 3 1");
            //1
        }
        else if (InputPattern == "Input4") {
            WillReturn.Add("10 10");
            WillReturn.Add("-444 -456 6808");
            WillReturn.Add("465 31 3659");
            WillReturn.Add("-16 103 7545");
            WillReturn.Add("199 342 7710");
            WillReturn.Add("374 -206 4493");
            WillReturn.Add("-15 -286 2504");
            WillReturn.Add("-287 155 8841");
            WillReturn.Add("-345 -444 3170");
            WillReturn.Add("-7 304 9561");
            WillReturn.Add("-143 -456 279");
            WillReturn.Add("-349 154 13 268 3811");
            WillReturn.Add("-40 256 150 80 8822");
            WillReturn.Add("486 270 394 337 5486");
            WillReturn.Add("310 -342 92 195 6358");
            WillReturn.Add("111 -243 209 445 5669");
            WillReturn.Add("-224 -120 197 31 904");
            WillReturn.Add("436 -206 50 25 7802");
            WillReturn.Add("-394 -493 409 229 4934");
            WillReturn.Add("-388 367 136 14 3866");
            WillReturn.Add("-79 -157 37 426 1670");
            //35302
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    struct EmemyInfoDef
    {
        internal int X;
        internal int Y;
        internal int HP;
    }

    struct AttackInfoDef
    {
        internal int X;
        internal int Y;
        internal int Width;
        internal int Height;
        internal int Damage;
    }

    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], K = wkArr[1];

        var EmemyInfoList = new List<EmemyInfoDef>();
        for (int I = 1; I <= N; I++) {
            SplitAct(InputList[I]);
            EmemyInfoList.Add(
                new EmemyInfoDef() { X = wkArr[0], Y = wkArr[1], HP = wkArr[2] });
        }

        var AttackInfoList = new List<AttackInfoDef>();
        for (int I = N + 1; I <= InputList.Count - 1; I++) {
            SplitAct(InputList[I]);
            AttackInfoDef WillAdd;
            WillAdd.X = wkArr[0]; WillAdd.Y = wkArr[1];
            WillAdd.Width = wkArr[2]; WillAdd.Height = wkArr[3];
            WillAdd.Damage = wkArr[4];
            AttackInfoList.Add(WillAdd);
        }

        Solve(EmemyInfoList.ToArray(), AttackInfoList.ToArray());
    }

    static void Solve(EmemyInfoDef[] pEmemyInfoArr, AttackInfoDef[] pAttackInfoArr)
    {
        int[,] MergedDamageArr = new int[1500 + 1, 1500 + 1];
        const int Geta = 500;

        foreach (AttackInfoDef EachAttackInfo in pAttackInfoArr) {
            for (int LoopX = EachAttackInfo.X;
                 LoopX <= EachAttackInfo.X + EachAttackInfo.Width; LoopX++) {
                for (int LoopY = EachAttackInfo.Y;
                 LoopY <= EachAttackInfo.Y + EachAttackInfo.Height; LoopY++) {
                    MergedDamageArr[LoopX + Geta,
                                    LoopY + Geta] += EachAttackInfo.Damage;
                }
            }
        }

        int Answer = 0;
        for (int I = 0; I <= pEmemyInfoArr.GetUpperBound(0); I++) {
            int wkHP = pEmemyInfoArr[I].HP;
            wkHP -= MergedDamageArr[pEmemyInfoArr[I].X + Geta,
                                    pEmemyInfoArr[I].Y + Geta];
            if (wkHP > 0) Answer += wkHP;
        }
        Console.WriteLine(Answer);
    }
}