using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class Program
{
    static void Main(string[] args)
    {
        new Magatro().Solve();
    }
}

class Magatro
{
    private int N, K;
    private int[] X, Y, HP, AX, AY, W, H, D;

    private void Scan()
    {
        string[] s = Console.ReadLine().Split(' ');
        N = int.Parse(s[0]);
        K = int.Parse(s[1]);
        X = new int[N];
        Y = new int[N];
        HP = new int[N];
        for (int i = 0; i < N; i++)
        {
            s = Console.ReadLine().Split(' ');
            X[i] = int.Parse(s[0]) + 500;
            Y[i] = int.Parse(s[1]) + 500;
            HP[i] = int.Parse(s[2]);
        }
        AX = new int[K];
        AY = new int[K];
        W = new int[K];
        H = new int[K];
        D = new int[K];
        for (int i = 0; i < K; i++)
        {
            s = Console.ReadLine().Split(' ');
            AX[i] = int.Parse(s[0]) + 500;
            AY[i] = int.Parse(s[1]) + 500;
            W[i] = int.Parse(s[2]);
            H[i] = int.Parse(s[3]);
            D[i] = int.Parse(s[4]);
        }
    }

    public void Solve()
    {
        Scan();

        int[,] imos = new int[1502, 1502];

        for (int i = 0; i < K; i++)
        {
            imos[AY[i], AX[i]] += D[i];
            imos[AY[i] + H[i] + 1, AX[i]] -= D[i];
            imos[AY[i], AX[i] + W[i] + 1] -= D[i];
            imos[AY[i] + H[i] + 1, AX[i] + W[i] + 1] += D[i];
        }

        for (int i = 1; i <= 1501; i++)
        {
            for (int j = 0; j <= 1500; j++)
            {
                imos[i, j] += imos[i - 1, j];
            }
        }
        for (int i = 1; i <= 1501; i++)
        {
            for (int j = 0; j <= 1500; j++)
            {
                imos[j, i] += imos[j, i - 1];
            }
        }

        int sum = 0;

        for(int i = 0; i < N; i++)
        {
            sum += Math.Max(0, HP[i] - imos[Y[i], X[i]]);
        }
        Console.WriteLine(sum);
    }
}