#include <bits/stdc++.h>
using namespace std;
struct Fenwick2D {
int n, m;
vector<vector<int>> bit;
vector<vector<int>> f;
Fenwick2D(int n, int m) : n(n), m(m), bit(n + 1), f(n + 1) {}
void fakeAdd(int i0, int j0) {
for (int i = i0 + 1; i <= n; i += i & -i) {
for (int j = j0 + 1; j <= m; j += j & -j) {
f[i].push_back(j);
}
}
}
void work() {
for (int i = 1; i <= n; i++) {
f[i].push_back(0);
sort(f[i].begin(), f[i].end());
f[i].resize(unique(f[i].begin(), f[i].end()) - f[i].begin());
bit[i].resize(f[i].size(), 0);
}
}
void add(int i0, int j0, int x) {
for (int i = i0 + 1; i <= n; i += i & -i) {
for (int j = lower_bound(f[i].begin(), f[i].end(), j0 + 1) - f[i].begin(); j < (int)f[i].size(); j += j & -j) {
bit[i][j] += x;
}
}
}
int sum(int i0, int j0) {
int res = 0;
for (int i = i0; i > 0; i -= i & -i) {
for (int j = upper_bound(f[i].begin(), f[i].end(), j0) - f[i].begin() - 1; j > 0; j -= j & -j) {
res += bit[i][j];
}
}
return res;
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
constexpr int C = 100000;
Fenwick2D fen(C + 1, C + 1);
int n, q;
cin >> n >> q;
vector<array<int, 2>> a(n);
for (int i = 0; i < n; i++) {
int x, y;
cin >> x >> y;
a[i] = {x, y};
fen.fakeAdd(C - x, C - y);
}
fen.work();
sort(a.begin(), a.end(), [&](array<int, 2> x, array<int, 2> y) { return x[0] + x[1] > y[0] + y[1]; });
vector<array<int, 4>> queries(q);
vector<int> ans(q);
for (int i = 0; i < q; i++) {
int x, y, z;
cin >> x >> y >> z;
queries[i] = {x, y, z, i};
}
sort(queries.begin(), queries.end(), [&](array<int, 4> x, array<int, 4> y) { return x[2] > y[2]; });
int ptr = 0;
for (auto [x, y, z, id] : queries) {
while (ptr < n && a[ptr][0] + a[ptr][1] >= z) {
auto [x, y] = a[ptr];
fen.add(C - x, C - y, +1);
ptr++;
}
ans[id] = fen.sum(C - x + 1, C - y + 1);
}
for (int x : ans) {
cout << x << '\n';
}
}
