#include <bits/stdc++.h>
using namespace std;

long long imos[2010][2010] = {};

int main() {
    int N, K, X[100010], Y[100010], HP[100010];
    cin >> N >> K;
    for (int i = 0; i < N; i++) {
        cin >> X[i] >> Y[i] >> HP[i];
        X[i] += 1000;
        Y[i] += 1000;
    }

    while (K--) {
        int AX, AY, W, H, D;
        cin >> AX >> AY >> W >> H >> D;
        AX += 1000;
        AY += 1000;
        imos[AX][AY] += D;
        imos[AX + W + 1][AY] -= D;
        imos[AX][AY + H + 1] -= D;
        imos[AX + W + 1][AY + H + 1] += D;
    }
    for (int i = 0; i < 2000; i++) {
        for (int j = 0; j < 2000; j++) {
            imos[i + 1][j] += imos[i][j];
        }
    }
    for (int i = 0; i < 2000; i++) {
        for (int j = 0; j < 2000; j++) {
            imos[i][j + 1] += imos[i][j];
        }
    }

    int sum = 0;
    for (int i = 0; i < N; i++) {
        sum += max(0ll, HP[i] - imos[X[i]][Y[i]]);
    }
    cout << sum << endl;
}