#include <iostream>
#include <vector>
using namespace std;

int N, K;
int Damage[1502][1502];

struct Enemy {
	int x, y, hp;
};

int main()
{
	cin >> N >> K;
	vector<Enemy>E(N);
	for (int i = 0; i < N; i++) {
		cin >> E[i].x >> E[i].y >> E[i].hp;
		E[i].x += 500;
		E[i].y += 500;
	}

	//Imos法
	//重みの加算
	for (int i = 0; i < K; i++) {
		int x, y, w, h, d;
		cin >> x >> y >> w >> h >> d;
		Damage[y + 500][x + 500]+=d;
		Damage[y + 500][x + 500 + w+1]-=d;
		Damage[y + 500 + h+1][x + 500]-=d;
		Damage[y + 500 + h+1][x + 500 + w+1]+=d;
	}
	//横方向への累積和
	for (int i = 0; i < 1001; i++) {
		for (int j = 0; j < 1001; j++) {
			Damage[i][j + 1] += Damage[i][j];
		}
	}
	//縦方向への累積和
	for (int i = 0; i < 1001; i++) {
		for (int j = 0; j < 1001; j++) {
			Damage[i + 1][j] += Damage[i][j];
		}
	}

	int sum = 0;
	for (int i = 0; i < N; i++) {
		E[i].hp-=Damage[E[i].y][E[i].x];
		if (E[i].hp > 0)sum += E[i].hp;
	}

	cout << sum << endl;

    return 0;
}