#include "bits/stdc++.h"
using namespace std;
#define cerr if(0) cerr
#define fi first
#define se second
#define pii pair<int,int>
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define pb push_back
#define ll long long
const int N = 2e5+5;
int n,q,tot, fans[N];
struct DATA{
int x,y,z,id;
bool operator < (const DATA &o ) const{
if(x==o.x) return id< o.id;
return x> o.x;
}
void print(){
cerr<<x<<" "<<y<<" "<<z<<"\n";
}
} a[N], t[N];
struct BITREV{
int bit[N];
void update(int i, int x){
for(;i;i-=i&-i) bit[i]+=x;
}
int get(int i){
int ans =0;
for(;i<=tot;i+=i&-i) ans+= bit[i];
return ans;
}
}bit;
void compress(){
vector<int> X,Y,Z;
for(int i=1;i<=tot;i++) {
X.pb(a[i].x), Y.pb(a[i].y), Z.pb(a[i].z);
}
sort(all(X));
sort(all(Y));
sort(all(Z));
for(int i=1;i<=tot;i++){
a[i].x = lower_bound(all(X), a[i].x) - X.begin()+1;
a[i].y = lower_bound(all(Y), a[i].y) - Y.begin()+1;
a[i].z = lower_bound(all(Z), a[i].z) - Z.begin()+1;
}
}
vector<pii> hist;
void mg(int x, int y, int u, int v){
int st= x-1;
int L= x, R=u;
while(L<=y&&R<=v){
if(a[L].y>= a[R].y){
t[++st] = a[L];
int z= a[L].z;
if(!a[L].id){
hist.pb({z,-1});
bit.update(z,1);
}
L++;
}
else{
t[++st] = a[R];
int z= a[R].z;
if(a[R].id) fans[a[R].id] += bit.get(z);
R++;
}
}
while(L<=y){
t[++st]= a[L++];
}
while(R<=v){
if(a[R].id) fans[a[R].id] += bit.get(a[R].z);
t[++st]= a[R++];
}
cerr<<x<<" "<<y<<" "<<u<<" "<<v<<" "<<L<<" "<<R<<"\n";
for(int i=x;i<=v;i++) a[i].print();
cerr<<"__________________\n";
for(int i=x;i<=v;i++) t[i].print();
cerr<<"\n\n";
for(int i=x;i<=v;i++) a[i] = t[i];
while(sz(hist)){
bit.update(hist.back().fi, hist.back().se);
hist.pop_back();
}
}
void dnc(int l, int r){
if(l==r) return;
int mid =(l+r)>>1;
dnc(l,mid);
dnc(mid+1,r);
mg(l,mid, mid+1,r);
}
signed main(){
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
if(fopen("TASK.INP", "r")){
freopen("TASK.INP", "r", stdin);
freopen("TASK.OUT", "w", stdout);
}
cin>>n>>q;
for(int i=1;i<=n;i++){
int x,y; cin>>x>>y;
a[++tot] = {x,y,x+y,0};
}
for(int i=1;i<=q;i++){
int x,y,z; cin>>x>>y>>z;
a[++tot] = {x,y,z,i};
}
compress();
cerr<<"A\n";
for(int i=1;i<=n;i++) a[i].print();
cerr<<"\nB\n";
for(int i=n+1;i<=tot;i++) a[i].print();
sort(a+1,a+tot+1);
cerr<<"\nT\n";
for(int i=1;i<=tot;i++) a[i].print();
cerr<<"\n\n";
dnc(1,tot);
for(int i=1;i<=q;i++) cout<<fans[i]<<"\n";
}
