package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)

func main() {
	sc.Split(bufio.ScanWords)
	n, k := nextInt(), nextInt()
	m, eria := make([][]int, 1001), make([][]int, 1502)
	for i := range m {
		m[i] = make([]int, 1001)
	}
	for i := range eria {
		eria[i] = make([]int, 1502)
	}

	for i := 0; i < n; i++ {
		x, y, hp := nextInt(), nextInt(), nextInt()
		m[y+500][x+500] = hp
	}

	for i := 0; i < k; i++ {
		x, y, w, h, d := nextInt()+500, nextInt()+500, nextInt(), nextInt(), nextInt()
		eria[y][x] += d
		eria[y+h+1][x+w+1] += d
		eria[y][x+w+1] -= d
		eria[y+h+1][x] -= d
	}

	for i, l := range eria {
		for j := range l[1:] {
			eria[i][j+1] += eria[i][j]
		}
	}

	for i, l := range eria[1:] {
		for j := range l {
			eria[i+1][j] += eria[i][j]
		}
	}

	total := 0
	for i, l := range m {
		for j, v := range l {
			if eria[i][j] >= v {
				continue
			}
			total += v - eria[i][j]
		}
	}
	fmt.Println(total)
}

func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(nextLine())
	return i
}