#include <bits/stdc++.h>
#define REP(i,a,b) for (auto i = (a); i <= (b); ++i)
#define PER(i,a,b) for (auto i = (b); i >= (a); --i)
#define log2(x) (31-__builtin_clz(x))
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define SZ(x) (int)(x).size()
#define mup(x,y) x = min(x,y)
#define Mup(x,y) x = max(x,y)
#define debug(x) cout << #x << " is " << x << el
#define el '\n'
using namespace std; using ll = long long; using ii = pair<int,int>; using iii = tuple<int,int,int>;
void solution(); int main() {ios::sync_with_stdio(0); cin.tie(0); solution();}
const int N = 100003;
int n, q;
ii student[N];
void input() {
cin >> n >> q;
REP(i,1,n) cin >> student[i].first >> student[i].second;
}
void solution() {
input();
REP(i,1,q) {
int x, y, z; cin >> x >> y >> z;
int cnt = 0;
REP(i,1,n) {
auto [a,b] = student[i];
if (a >= x && b >= y && a+b >= z) ++cnt;
}
cout << cnt << el;
}
}
