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#include <algorithm>
#include <iostream>
#include <cassert>
#include <vector>
#include <cstdio>
#include <array>
#include <deque>
#include <cmath>
#include <stack>
#include <queue>
#include <set>
#include <map>
namespace {
	using namespace std;

	typedef vector<int> vint;
	typedef long long unsigned ulo;
	typedef long long lint;
	
	void __attribute__((unused)) spacje(int k) {
		int magic;
		static stack<int*> stos;
		while (!stos.empty() && stos.top() <= &magic) stos.pop();
		stos.push(&magic);
		for (int n = k * stos.size(); n--;) fprintf(stderr, " ");
	}
	
	#define BOTH(x) for (int x = 0; x < 2; ++x)
	
	#define UPlt(xx, yy) (xx) = min(xx, yy)
	#define UPgt(xx, yy) (xx) = max(xx, yy)
	
	struct in_t {
		template<class T>
		operator T () {
			static bool __attribute__((unused)) dummy = ios_base::sync_with_stdio(false);
			T x;
			cin >> x;
			return x;
		}
	};
	in_t __attribute__((unused)) in;
	
	class Print {
		ostream & os;
		bool nfirst;
	 public:
		Print(ostream & os = cout) : os(os), nfirst(false) {}
		~Print() { os << endl; }
		template<class T> Print & operator , (T const& e) {
			if (nfirst) os << " "; os << e; nfirst = true; return *this; }
	};
	
	#define print Print{cout},
	#define prerr Print{cerr},
	
	template <class T>
	struct Range {
		struct Intit {
			T x; Intit(T x) : x(x) {}
			T & operator * () { return x; };
			bool operator != (Intit other) { return x < other.x; }
			void operator ++ () { ++x; }
		};
		
		T b, e;
		explicit Range(T n) : b(0), e(n) {}
		Range(T b, T e) : b(b), e(e) {}
		Intit begin() { return b; }
		Intit end() { return e; }
	};
	
	template <class T>
	Range<T> range(T n) { return Range<T>(n); }
	
	template <class T>
	Range<T> range(T b, T e) { return Range<T>(b, e); }

	template <class T>
	Range<T> inclusive(T b, T e) { return Range<T>(b, e + 1); }
	
	#define _ __attribute__((unused)) _
};

#define dprintf(...) if (1) spacje(2), fprintf(stderr, __VA_ARGS__)

struct P {
	int x, y;
	
	bool operator < (P const& p) const { return tie(y, x) < tie(p.y, p.x); }

	friend ostream & operator << (ostream & os, P const& p) {
		os << p.x << " " << p.y;
		return os;
	}
};

struct E {
	P p;
	int v;
	
	bool operator < (E const& e) const { return tie(p, v) < tie(e.p, e.v); }
	
	friend ostream & operator << (ostream & os, E const& e) {
		os << e.p << " " << e.v;
		return os;
	}
};
	
vector<E> ekspo;
vector<E> straz;

vector<vector<int>> graf;
vector<int> brakuje;
lint value = 0;
lint best = 0;

void dfs(int si) {
	if (si == (int)straz.size()) {
		UPgt(best, value);
		return;
	}
	dfs(si + 1);
	value -= straz[si].v;
	for (int i : graf[si]) {
		if (--brakuje[i] == 0) value += ekspo[i].v;
	}
	dfs(si + 1);
	for (int i : graf[si]) {
		if (++brakuje[i] == 1) value -= ekspo[i].v;
	}
	value += straz[si].v;
}

int main() {
	int n = in;
	int m = in;
	int w = in;
	int h = in;
	P dir = {w, h};
	P ldir = {-w, h};
	
	auto iwe = [](P a, P b) {
		return lint(a.x) * b.y - lint(a.y) * b.x;
	};
	
	auto pod = [&](P straz, P eks) {
		// ~ print "czy", eks, "pod", straz;
		eks.x -= straz.x;
		eks.y -= straz.y;
		// ~ print eks.y, iwe(ldir, eks), iwe(eks, dir);
		// ~ print eks.y <= 0 && iwe(ldir, eks) >= 0 && iwe(eks, dir) >= 0 ? "jo" : "nei";
		return eks.y <= 0 && iwe(ldir, eks) >= 0 && iwe(eks, dir) >= 0;
	};
	
	auto read = [](int kkk){		
		vector<E> vec;
		for (int _ : range(kkk)) {
			int x = in;
			int y = in;
			int v = in;
			vec.push_back({{x,y},v});
		}
		return vec;
	};
	
	vector<E> ekspo_bu = read(n);
	sort(ekspo_bu.begin(), ekspo_bu.end());
	vector<E> straz_bu = read(m);
	sort(straz_bu.begin(), straz_bu.end());
	set<E> ekspo_ok(ekspo_bu.begin(), ekspo_bu.end());
	for (E strazak : straz_bu) {
		int zysk = -strazak.v;
		vector<E> mozedol;
		for (E e : ekspo_bu) {
			if (pod(strazak.p, e.p)) {
				zysk += e.v;
				mozedol.push_back(e);
			}
		}
		if (zysk > 0) {
			straz.push_back(strazak);
		} else {
			for (E e : mozedol) {
				auto it = ekspo_ok.find(e);
				if (it != ekspo_ok.end()) ekspo_ok.erase(it);
			}
		}
	}
	for (E e : ekspo_ok) ekspo.push_back(e);
	
	graf.resize(straz.size());
	brakuje.resize(ekspo.size());
	for (int i : range(straz.size())) {
		for (int j : range(ekspo.size())) {
			if (pod(straz[i].p, ekspo[j].p)) {
				graf[i].push_back(j);
				brakuje[j]++;
			}
		}
	}
	
	for (int i : range(ekspo.size())) {
		if (brakuje[i] == 0) value += ekspo[i].v;
	}
	UPgt(best, value);
	
	// ~ print "straz";
	// ~ for (E strazak : straz) print strazak;
	
	// ~ print "ekspo";
	// ~ for (E eks : ekspo) print eks;
	
	dfs(0);
	
	print best;
	
	return 0;
}