#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
using namespace std;
// using namespace __gnu_pbds;
// #define int long long
#define mod 1000000007
#define base 7001
#define base2 757
#define F first
#define S second
// #define pi acos(-1)
#define double long double
// #define ordered_set tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update>
// #define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
// #pragma GCC optimize("O3,Ofast,unroll-loops")
// #pragma GCC target("avx2,sse3,sse4,avx")
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
constexpr int maxn = 1000005;
const int N = 1 << (int)(ceil(log2(maxn)));
int n, m, a, b, east[maxn], ans[maxn];
vector<int> adj[maxn][2];
vector<array<int, 3>> cords;
bool vis[maxn], vis2[maxn], vis3[maxn];
void dfs(int v, bool f) {
vis[v] = 1;
for (int u : adj[v][f]) {
if (!vis[u]) dfs(u, f);
}
}
void dfsmn(int v, int s) {
vis3[v] = 1;
ans[v] -= s;
for (int u : adj[v][1]) {
if (!vis3[u]) dfsmn(u, s);
}
}
void dfsmx(int v, int s) {
vis2[v] = 1;
ans[v] += s;
for (int u : adj[v][1]) {
if (!vis2[u]) dfsmx(u, s);
}
}
signed main()
{
cin.tie(0) -> sync_with_stdio(0);
cin >> n >> m >> a >> b;
for (int i = 1; i <= n; i++) {
int x, y; cin >> x >> y;
cords.push_back({y, x, i});
}
for (int i = 0; i < m; i++) {
int u, v, d; cin >> u >> v >> d;
if (d % 2) {
adj[u][0].push_back(v);
adj[v][1].push_back(u);
}
else {
adj[u][0].push_back(v);
adj[v][0].push_back(u);
adj[u][1].push_back(v);
adj[v][1].push_back(u);
}
}
sort(cords.begin(), cords.end());
int cnt = 1;
for (auto [y, x, i] : cords) {
if (i < 0) continue;
if (x == a) east[i] = cnt++;
}
for (auto [y, x, i] : cords) {
if (!vis[i] && !x) dfs(i, 0);
}
for (auto [y, x, i] : cords) {
if (east[i] && !vis3[i] && vis[i]) dfsmn(i, east[i]);
}
reverse(cords.begin(), cords.end());
for (auto [y, x, i] : cords) {
if (east[i] && !vis2[i] && vis[i]) dfsmx(i, east[i]);
}
for (auto [y, x, i] : cords) {
if (!x) cout << ans[i] + vis2[i] << '\n';
}
}
