#pragma GCC target("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
#include<atcoder/convolution>
#include<atcoder/modint>
typedef atcoder::static_modint<754974721> mint;

int main(){
	int n, m; cin >> n >> m;
	vector<int> a(n), b(n), c(n);
	vector<int> x(m), y(m), z(m);
	for (int i=0; i<n; i++){
		cin >> a[i] >> b[i] >> c[i];
	}
	for (int i=0; i<m; i++){
		cin >> x[i] >> y[i] >> z[i];
	}
	
	vector<mint> f(201 * 201 * 201);
	vector<mint> g(201 * 201 * 201);
	for (int i=0; i<n; i++){
		f[a[i] + b[i] * 201 + c[i] * 201 * 201] += 1;
		g[100 - a[i] + (100 - b[i]) * 201 + (100 - c[i]) * 201 * 201] += 1;
	}
	vector<mint> h = atcoder::convolution<mint>(f, g);
	int ans = 0;
	for (int i=0; i<m; i++){
		int t = h[(x[i] + 100) + (y[i] + 100) * 201 + (z[i] + 100) * 201 * 201].val();
		ans = max(ans, 2 * n - t);
	}
	cout << ans << '\n';
}