package main

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

var sc = bufio.NewScanner(os.Stdin)

func main() {
	sc.Split(bufio.ScanWords)
	n, k := nextInt(), nextInt()
	m := make([][]int, 1001)
	eria := make([][]int, 1001)
	for i := range m {
		m[i] = make([]int, 1001)
		eria[i] = make([]int, 1002)
	}

	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(), nextInt(), nextInt(), nextInt(), nextInt()
		x += 500
		y += 500
		for j := 0; j <= h; j++ {
			if y+j > 1000 {
				continue
			}

			eria[y+j][x] += d

			xP := x + w + 1
			if xP > 1001 {
				xP = 1001
			}
			eria[y+j][xP] -= d
		}
	}

	dTotal := 0
	for i, v := range eria {
		sum := 0
		for j, v2 := range v[:1001] {
			sum += v2
			if m[i][j] <= sum {
				continue
			}
			dTotal += m[i][j] - sum
		}
	}
	fmt.Println(dTotal)
}

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

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

func nextInt64() int64 {
	i, _ := strconv.ParseInt(nextLine(), 10, 64)
	return i
}

func nextUint64() uint64 {
	i, _ := strconv.ParseUint(nextLine(), 10, 64)
	return i
}

func nextFloat() float64 {
	f, _ := strconv.ParseFloat(nextLine(), 64)
	return f
}