#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <cstdio>
#include <cmath>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(n);i++)
const int INF = 1e9;

//2次元BIT
const int MAX_W = 1000, MAX_H = 1000;
int bit[MAX_W + 1][MAX_H + 1];
void add(int a, int b, ll w){
	for (int y = a; y < MAX_W; y += y & -y){
		for (int x = b; x < MAX_H; x += x & -x){
			bit[y][x] += w;
		}
	}
}

ll sum(int a, int b){
	ll ret = 0;
	for (int y = a; y > 0; y -= y & -y){
		for (int x = b; x > 0; x -= x & -x){
			ret += bit[y][x];
		}
	}
	return ret;
}

int n, k;
int x[100010], y[100010], hp[100010];

int main(void){
	cin >> n >> k;
	rep(i, n){
		cin >> x[i] >> y[i] >> hp[i];
		x[i] += 500; y[i] += 500;// 0を500に
	}
	rep(i, k){
		int ax, ay, w, h, d;
		cin >> ax >> ay >> w >> h >> d;
		ax += 500; ay += 500;
		add(ay, ax, d);
		add(ay + h + 1, ax, -d);
		add(ay, ax + w + 1, -d);
		add(ay + h + 1, ax + w + 1, d);
	}

	ll ans = 0;
	rep(i, n){
		ans += max((ll)0, hp[i] - sum(y[i], x[i]));
	}
	printf("%lld\n", ans);
	return 0;
}