#include <cstdio>
#define FIN "regiuni.in"
#define FOUT "regiuni.out"
#define MAX 1024
#define FOR(l,h,i) for(i=l;i<h;++i)

struct punct {
	long x, y;
} P[MAX];
struct dreapta {
	long a,b,c;
} D[MAX];

long b[MAX], max, N,M;

inline int loc(dreapta D, punct B) {
	return (D.a*B.x + D.b*B.y + D.c) < 0 ? 0 : 1;
}

int main() {
	long i, j;

	freopen(FIN, "r", stdin);
	scanf("%ld %ld", &N, &M);
	FOR(0,N,i)
		scanf("%ld %ld %ld", &D[i].a, &D[i].b, &D[i].c);
	FOR(0,M,i)
		scanf("%ld %ld", &P[i].x, &P[i].y);
	fclose(stdin);

	max = 0;
	FOR (0,N,i) 
		FOR (0,M,j) {
			b[j] += loc(D[i], P[j]);
			max = max<b[j] ? b[j] : max;
		}

	freopen(FOUT, "w", stdout);
	printf("%ld\n", max);
	fclose(stdout);
	return 0;
}