#include<cstdio>
#include<numeric>
#include<vector>
#define rep(i,a) for(int i=0;i<(a);++i)

struct dat
{ 
	int x, y, hp; 

	dat( int x, int y, int hp )
	:	x(x), y(y), hp(hp)
	{}
};

int N, K;
int fld[1002][1002];
std::vector<dat> pts;

int main()
{
	scanf( "%d%d", &N, &K );
	rep( i, N )
	{
		int x, y, hp;
		scanf( "%d%d%d", &x, &y, &hp );
		pts.push_back( dat( x, y, hp ) );
	}
	rep( i, K )
	{
		int ax, ay, w, h, d;
		scanf( "%d%d%d%d%d", &ax, &ay, &w, &h, &d );
		ax += 500, ay += 500;
		fld[ay][ax] -= d; 
		if( ax+w+1 <= 1000 ) fld[ay][ax+w+1] += d;
		if( ay+h+1 <= 1000 ) fld[ay+h+1][ax] += d;
		if( ax+w+1 <= 1000 && ay+h+1 <= 1000 ) fld[ay+h+1][ax+w+1] -= d;
	}

	rep( i, 1002 )
		std::partial_sum( fld[i], fld[i]+1002, fld[i] );
	rep( j, 1002 ) rep( i, 1001 )
		fld[i+1][j] += fld[i][j];

	int ans = 0;
	rep( i, N )
	{
		fld[pts[i].y+500][pts[i].x+500] += pts[i].hp;

		if( fld[pts[i].y+500][pts[i].x+500] > 0 )
			ans += fld[pts[i].y+500][pts[i].x+500];
	}

	printf( "%d\n", ans );

	return 0;
}