#include <bits/stdc++.h>
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
#pragma GCC optimize("Ofast,unroll-loops")
using namespace std;
#define endl '\n'
#define ll long long
#define all(x) x.begin(), x.end()
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, q;
cin >> n >> q;
pair<ll, ll> v[n];
for (int i = 0; i < n; i++) cin >> v[i].first >> v[i].second;
while (q--) {
ll x, y, z;
cin >> x >> y >> z;
ll ans = 0;
for (int i = 0; i < n; i++) ans += (v[i].first >= x && v[i].second >= y && v[i].first + v[i].second >= z);
cout << ans << endl;
}
}
