import java.io.IOException;
import java.util.InputMismatchException;

public class Main {
	void run() {
		MyScanner sc = new MyScanner();

		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[][] imos = new int[1001][1002];
		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();
			for (int j = ay; j <= Math.min(1000, ay + h); j++) {
				imos[j][ax] += d;
				imos[j][Math.min(1001, ax + w + 1)] -= d;
			}
		}

		for (int i = 0; i < 1001; i++) {
			for (int j = 1; j < 1002; j++) {
				imos[i][j] += imos[i][j - 1];
			}
		}

		int sum = 0;
		for (int i = 0; i < n; i++) {
			int tmp = Math.max(0, hp[i] - imos[y[i]][x[i]]);
			sum += tmp;
		}
		System.out.println(sum);
	}

	public static void main(String[] args) {
		new Main().run();
	}

	public void mapDebug(int[][] a) {
		System.out.println("--------map display---------");
		for (int i = 0; i < a.length; i++) {
			for (int j = 0; j < a[i].length; j++) {
				System.out.printf("%3d ", a[i][j]);
			}
			System.out.println();
		}
		System.out.println("----------------------------" + '\n');
	}

	class MyScanner {
		int read() {
			try {
				return System.in.read();
			} catch (IOException e) {
				throw new InputMismatchException();
			}
		}

		boolean isSpaceChar(int c) {
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		boolean isEndline(int c) {
			return c == '\n' || c == '\r' || c == -1;
		}

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

		int[] nextIntArray(int n) {
			int[] array = new int[n];
			for (int i = 0; i < n; i++)
				array[i] = nextInt();
			return array;
		}

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

		long[] nextLongArray(int n) {
			long[] array = new long[n];
			for (int i = 0; i < n; i++)
				array[i] = nextLong();
			return array;
		}

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

		double[] nextDoubleArray(int n) {
			double[] array = new double[n];
			for (int i = 0; i < n; i++)
				array[i] = nextDouble();
			return array;
		}

		String next() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		String[] nextStringArray(int n) {
			String[] array = new String[n];
			for (int i = 0; i < n; i++)
				array[i] = next();

			return array;
		}

		String nextLine() {
			int c = read();
			while (isEndline(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isEndline(c));
			return res.toString();
		}
	}
}