#include <bits/stdc++.h>
#define eb emplace_back
#define iter(a) a.begin(), a.end()
#define printv(a, b) { \
for(auto pv : a) b << pv << " "; \
b << "\n"; \
}
using namespace std;
typedef long long ll;
vector<int> BIT;
int lowbit(int x){
return x & -x;
}
void modify(int x, int v){
assert(x != 0);
for(; x < BIT.size(); x += lowbit(x)){
BIT[x] += v;
}
}
int query(int x){
int ans = 0;
for(; x > 0; x -= lowbit(x)){
ans += BIT[x];
}
return ans;
}
vector<int> tv;
struct OAO{
int x = 0, y = 0, z = 0, type = -1;
OAO(int x = 0, int y = 0, int z = 0, int type = -1):
x(x), y(y), z(z), type(type) {}
void upd(){
x = lower_bound(iter(tv), x, greater<>()) - tv.begin() + 1;
y = lower_bound(iter(tv), y, greater<>()) - tv.begin() + 1;
z = lower_bound(iter(tv), z, greater<>()) - tv.begin() + 1;
}
};
bool comp(OAO a, OAO b){
if(a.x == b.x) return a.type == -1;
return a.x < b.x;
}
ostream& operator<<(ostream& o, OAO oao){
return o << '(' << oao.x << ',' << oao.y << ',' << oao.z << ',' << oao.type << ')';
}
vector<int> ans;
vector<OAO> b;
void cdq(vector<OAO>& a, int l, int r){
if(l >= r) return;
int m = (l + r) / 2;
cdq(a, l, m);
cdq(a, m + 1, r);
//cerr << "test " << l << " " << r << "\n";
//printv(a, cerr);
//for(int i = 1; i < BIT.size(); i++) cerr << query(i) << " ";
//cerr << "\n";
int lp = l, rp = m + 1;
int bp = l;
while(lp <= m && rp <= r){
if(a[lp].y <= a[rp].y){
if(a[lp].type == -1){
modify(a[lp].z, 1);
}
b[bp] = a[lp];
lp++;
}
else{
if(a[rp].type != -1){
ans[a[rp].type] += query(a[rp].z);
}
b[bp] = a[rp];
rp++;
}
bp++;
}
while(lp <= m){
if(a[lp].type == -1){
modify(a[lp].z, 1);
}
b[bp] = a[lp];
lp++;
bp++;
}
while(rp <= r){
if(a[rp].type != -1){
ans[a[rp].type] += query(a[rp].z);
}
b[bp] = a[rp];
rp++;
bp++;
}
for(int i = l; i <= m; i++){
if(a[i].type == -1) modify(a[i].z, -1);
}
for(int i = l; i <= r; i++) a[i] = b[i];
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, q;
cin >> n >> q;
ans.resize(q);
tv.reserve(3 * (n + q));
vector<OAO> a;
a.reserve(n + q);
for(int i = 0; i < n; i++){
int s, t;
cin >> s >> t;
a.eb(OAO(s, t, s + t, -1));
tv.eb(s);
tv.eb(t);
tv.eb(s + t);
}
for(int i = 0; i < q; i++){
int x, y, z;
cin >> x >> y >> z;
a.eb(OAO(x, y, z, i));
tv.eb(x);
tv.eb(y);
tv.eb(z);
}
sort(iter(tv), greater<>());
tv.resize(unique(iter(tv)) - tv.begin());
BIT.resize(tv.size() + 1);
b.resize(a.size());
for(auto& i : a){
i.upd();
}
sort(iter(a), comp);
//printv(tv, cerr);
cdq(a, 0, (int)a.size() - 1);
for(int i = 0; i < q; i++) cout << ans[i] << "\n";
return 0;
}
