#include <bits/stdc++.h>.
#define int long long
using namespace std;
const int N = 4e5 + 5;
struct fenw {
int t[N];
void add(int i, int val){
for(; i < N; i += i & - i) {
t[i] += val;
}
}
int query(int i) {
int ans = 0;
for(; i > 0; i -= i & - i) {
ans += t[i];
}
return ans;
}
int query(int l, int r) {
return query(r) - query(l - 1);
}
}fenw1, fenw2;
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n, q;
cin >> n >> q;
vector<pair<int,int>> a(n + 1);
for(int i = 1; i <= n; i++) {
cin >> a[i].first >> a[i].second;
a[i].first += 1;
a[i].second += 1;
}
if(n <= 3000 && q <= 3000) {
for(int i = 1; i <= q; i++) {
int x, y, z;
cin >> x >> y >> z;
x += 1;
y += 1;
z += 1;
int ans = 0;
for(int j = 1; j <= n; j++) {
if(a[j].first >= x && a[j].second >= y && a[j].first + a[j].second >= z) {
ans += 1;
}
}
cout << ans << "\n";
}
return 0;
}
sort(a.begin() + 1, a.end());
//cout << "\n";
for(int i = 1; i <= n; i++) {
//cout << a[i].first << " " << a[i].second << "\n";
}
//cout << "\n";
vector<pair<int,int>> query1[n + 1];
vector<pair<int,int>> saberi2[n + 1];
vector<pair<int,int>> oduzmi2[n + 1];
int index = 1;
vector<int> ans(q + 1, 0);
while(q--) {
int x, y, z;
cin >> x >> y >> z;
x += 1;
y += 1;
z += 1;
int l = 1, r = n, p = - 1;
while(l <= r) {
int mid = (l + r) / 2;
if(a[mid].first >= x) {
r = mid - 1;
p = mid;
}
else {
l = mid + 1;
}
}
if(p == - 1) {
index += 1;
continue;
}
/*
int ans = 0;
for(int i = p; i <= n; i++) {
if(a[i].second >= max(z - a[i].first, y)) {
ans += 1;
}
}
cout << ans << "\n";*/
//query[p].push_back({{y, z}, index++});
l = p, r = n; int g = - 1;
while(l <= r) {
int mid = (l + r) / 2;
if(z - a[mid].first >= y) {
l = mid + 1;
g = mid;
}
else {
r = mid - 1;
}
}
int ans = 0;
//cout << index << " " << p << " " << g << "\n";
if(g == - 1) {
/*
for(int i = p; i <= n; i++) {
if(a[i].second >= y) {
ans += 1;
}
}*/
query1[p].push_back({y, index++});
}
else {
/*
for(int i = p; i <= g; i++) {
if(a[i].first + a[i].second >= z) {
ans += 1;
}
}*/
saberi2[p].push_back({z, index});
if(g + 1 <= n )
oduzmi2[g + 1].push_back({z, index});
/*
for(int i = g + 1; i <= n; i++) {
if(a[i].second >= y) {
ans += 1;
}
}*/
if(g + 1 <= n) {
query1[g + 1].push_back({y, index++});
}
else {
index += 1;
}
}
}
for(int i = n; i > 0; i--) {
fenw1.add(a[i].second, 1);
fenw2.add(a[i].first + a[i].second, 1);
for(auto it : query1[i]) {
ans[it.second] += fenw1.query(it.first, N - 1);
/*
for(int j = i; j <= n; j += 1) {
if(a[j].second >= it.first) {
ans[it.second] += 1;
}
}*/
}
for(auto it : saberi2[i]) {
ans[it.second] += fenw2.query(it.first, N - 1);
/*
for(int j = i; j <= n; j += 1) {
if(a[j].first + a[j].second >= it.first) {
ans[it.second] += 1;
}
}*/
}
for(auto it : oduzmi2[i]) {
ans[it.second] -= fenw2.query(it.first, N - 1);
/*
for(int j = i; j <= n; j += 1) {
if(a[j].first + a[j].second >= it.first) {
ans[it.second] -= 1;
}
}*/
}
}
for(int i = 1; i < index; i++) {
cout << ans[i] << "\n";
}
}
