#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MOD = 1000000007;
const int MAX_N = 100010;

#define REP(i,n) for((i)=0;(i)<(int)(n);(i)++)

int x[MAX_N], y[MAX_N], hp[MAX_N];
ll table[1600][1600];

int main(){
    int n, k;
    cin >> n >> k;
    for (int i = 0; i < n; i++){
        cin >> x[i] >> y[i] >> hp[i];
        x[i] += 500;
        y[i] += 500;
    }

    for (int i = 0; i < k; i++){
        int Ax, Ay, w, h, d;
        cin >> Ax >> Ay >> w >> h >> d;
        Ax += 500;
        Ay += 500;
        table[Ay][Ax] += d;
        table[Ay + h + 1][Ax] -= d;
        table[Ay][Ax + w + 1] -= d;
        table[Ay + h + 1][Ax + w + 1] += d;
    }

    // 横方向への累積和
    for (int i = 0; i < 1600; i++){
        for (int j = 1; j < 1600; j++){
            table[i][j] += table[i][j - 1];
        }
    }

    // 縦方向への累積和
    for (int i = 1; i < 1600; i++){
        for (int j = 0; j < 1600; j++){
            table[i][j] += table[i - 1][j];
        }
    }

    ll ans = 0;
    for (int i = 0; i < n; i++){
        ll rest = hp[i] - table[y[i]][x[i]];
        if (rest > 0) ans += rest;
    }    

    cout << ans << endl;

    return 0;
}