#include<bits/stdc++.h>
#define int long long
using namespace std;
typedef pair<int,int> pii;
const int B = 320;
int n,q;
int sumy[321],sumz[321];
int valy[100010],valz[100010];
int s[100010],t[100010];
int x[100010],y[100010],z[100010];
int mapay[100010],mapaz[100010];
int troca[100010];
int ans[100010];
bool ok[100010];
vector<pii> ordy,ordz;
int bb(int x, vector<pii> &v){
int ini = 0, fim = v.size() - 1;
while(ini < fim){
int meio = (ini + fim + 1)/2;
if(v[meio].first <= x){
ini = meio;
}
else{
fim = meio - 1;
}
}
if(x < v[0].first){
return 0;
}
return ini + 1;
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> q;
for(int i = 1;i <= n;i++){
cin >> s[i] >> t[i];
}
for(int i = 1;i <= q;i++){
cin >> x[i] >> y[i] >> z[i];
ordy.push_back({y[i] , i});
ordz.push_back({z[i] , i});
}
sort(ordy.begin(), ordy.end());
sort(ordz.begin(), ordz.end());
for(int i = 0;i < q;i++){
mapay[ordy[i].second] = i + 1;
mapaz[ordz[i].second] = i + 1;
}
priority_queue<pii> pq,pqx,pqyz;
for(int i = 1;i <= n;i++){
pq.push({s[i] , i});
}
for(int i = 1;i <= q;i++){
pqx.push({x[i] , i});
pqyz.push({z[i] - y[i] , i});
}
while(!pq.empty()){
int h = pq.top().first, pos = pq.top().second;
pq.pop();
while(!pqyz.empty()){
if(pqyz.top().first > h){
int a = pqyz.top().second;
ok[a] = true;
troca[a] = (sumy[mapay[a]/B] + valy[mapay[a]]) - (sumz[mapaz[a]/B] + valz[mapaz[a]]);
pqyz.pop();
}
else{
break;
}
}
while(!pqx.empty()){
if(pqx.top().first > h){
int a = pqx.top().second;
if(!ok[a]){
ans[a] = sumy[mapay[a]/B] + valy[mapay[a]];
}
else{
ans[a] = troca[a] + sumz[mapaz[a]/B] + valz[mapaz[a]];
}
pqx.pop();
}
else{
break;
}
}
int posy = bb(t[pos], ordy);
int l = 0, r = posy;
while(l + B - 1 <= r){
sumy[l/B]++;
l += B;
}
while(l <= r){
valy[l]++;
l++;
}
int posz = bb(s[pos] + t[pos], ordz);
l = 0, r = posz;
while(l + B - 1 <= r){
sumz[l/B]++;
l += B;
}
while(l <= r){
valz[l]++;
l++;
}
}
while(!pqx.empty()){
int a = pqx.top().second;
if(!ok[a]){
ans[a] = sumy[mapay[a]/B] + valy[mapay[a]];
}
else{
ans[a] = troca[a] + sumz[mapaz[a]/B] + valz[mapaz[a]];
}
pqx.pop();
}
for(int i = 1;i <= q;i++){
cout << ans[i] << "\n";
}
}
