using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using Enu = System.Linq.Enumerable;

class Program
{
    static readonly int Offset = 501;
    static readonly int MaxRange = Offset * 3 + 10;

    void Solve()
    {
        int N = reader.Int(), K = reader.Int();
        var Enemies = reader.IntGrid(N);
        var Attacks = reader.IntGrid(K);
        long[,] sum = new long[MaxRange, MaxRange];

        foreach (var a in Attacks)
        {
            int x1 = a[0] + Offset, y1 = a[1] + Offset;
            int x2 = x1 + a[2], y2 = y1 + a[3], damage = a[4];
            sum[y1, x1] += damage;
            sum[y1, x2 + 1] -= damage;
            sum[y2 + 1, x1] -= damage;
            sum[y2 + 1, x2 + 1] += damage;
        }
        for (int y = 1; y < MaxRange; y++)
            for (int x = 1; x < MaxRange; x++)
                sum[y, x] += sum[y - 1, x] + sum[y, x - 1] - sum[y - 1, x - 1];
        long ans = 0;
        foreach (var e in Enemies)
        {
            int x = e[0] + Offset, y = e[1] + Offset, hp = e[2];
            ans += Math.Max(0, hp - sum[y, x]);
        }

        Console.WriteLine(ans);
    }





    Reader reader = new Reader(Console.In);
    static void Main() { new Program().Solve(); }
}

class Reader
{
    private readonly TextReader reader;
    private readonly char[] separator = { ' ' };
    private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries;
    private string[] A = new string[0];
    private int i;

    public Reader(TextReader r) { reader = r; }
    public Reader(string file) { reader = new StreamReader(file); }
    public bool HasNext() { return Enqueue(); }
    public string String() { return Dequeue(); }
    public int Int() { return int.Parse(Dequeue()); }
    public long Long() { return long.Parse(Dequeue()); }
    public double Double() { return double.Parse(Dequeue()); }
    public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); }
    public int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public int[][] IntGrid(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public string Line() { return reader.ReadLine().Trim(); }
    private string[] Split(string s) { return s.Split(separator, removeOp); }
    private bool Enqueue()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return Enqueue();
        A = Split(line);
        i = 0;
        return true;
    }
    private string Dequeue() { Enqueue(); return A[i++]; }
}