import java.io.*;
import java.util.*;


public class Main_yukicoder60 {

    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Printer pr = new Printer(System.out);

		final int MAX = 1001;

		int n = sc.nextInt();
		int k = sc.nextInt();

		int[] x = new int[n];
		int[] y = new int[n];
		int[] hp = new int[n];
		for (int i = 0; i < n; i++) {
			x[i] = sc.nextInt() + 500;
			y[i] = sc.nextInt() + 500;
			hp[i] = sc.nextInt();
		}

		int[][] mat = new int[MAX + 1][MAX + 1];

		for (int i = 0; i < k; i++) {
			int ax = sc.nextInt() + 500;
			int ay = sc.nextInt() + 500;
			int w = sc.nextInt();
			int h = sc.nextInt();
			int d = sc.nextInt();

			mat[ay][ax] += d;
			mat[ay][Math.min(MAX, ax + w + 1)] -= d;
			mat[Math.min(MAX, ay + h + 1)][ax] -= d;
			mat[Math.min(MAX, ay + h + 1)][Math.min(MAX, ax + w + 1)] += d;
		}

		for (int i = 0; i <= MAX; i++) {
			for (int j = 1; j <= MAX; j++) {
				mat[i][j] += mat[i][j - 1];
			}
		}
		for (int i = 1; i <= MAX; i++) {
			for (int j = 0; j <= MAX; j++) {
				mat[i][j] += mat[i - 1][j];
			}
		}

		int ret = 0;
		for (int i = 0; i < n; i++) {
			int tmp = hp[i] - mat[y[i]][x[i]];
			if (tmp > 0) {
				ret += tmp;
			}
		}

		pr.println(ret);

//		for (int i = 0; i <= MAX; i++) {
//			for (int j = 0; j <= MAX; j++) {
//				pr.print(mat[i][j]);
//				pr.print(" ");
//			}
//			pr.println();
//		}

		pr.close();
		sc.close();
    }

	@SuppressWarnings("unused")
	private static class Scanner {
		BufferedReader br;
		Iterator<String> it;

		Scanner (InputStream in) {
			br = new BufferedReader(new InputStreamReader(in));
		}

		String next() throws RuntimeException  {
			try {
				if (it == null || !it.hasNext()) {
					it = Arrays.asList(br.readLine().split(" ")).iterator();
				}
				return it.next();
			} catch (IOException e) {
				throw new IllegalStateException();
			}
		}

		int nextInt() throws RuntimeException {
			return Integer.parseInt(next());
		}

		long nextLong() throws RuntimeException {
			return Long.parseLong(next());
		}

		float nextFloat() throws RuntimeException {
			return Float.parseFloat(next());
		}

		double nextDouble() throws RuntimeException {
			return Double.parseDouble(next());
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
//				throw new IllegalStateException();
			}
		}
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}