This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
struct segtree{
ll n;
vector<ll>d;
segtree(ll n):n(n){
d.resize(4*n);
build(1,0,n);
}
void build(ll node,ll l,ll r){
if(l==r){
d[node]=0;
return;
}
ll mid=(l+r)/2;
build(node*2,l,mid);
build(node*2+1,mid+1,r);
d[node]=d[node*2]+d[node*2+1];
}
ll query(ll node,ll l,ll r,ll L,ll R){
if(l > R || r < L || L > R){
return 0ll;
}
if(L <= l && r <= R){
return d[node];
}
ll mid=(l+r)/2;
return query(node*2,l,mid,L,R)+query(node*2+1,mid+1,r,L,R);
}
void update(ll node,ll l,ll r,ll k,ll val){
if(l>k || r<k)return;
if(l==r){
d[node]+=val;
return;
}
ll mid=(l+r)/2;
update(node*2,l,mid,k,val);
update(node*2+1,mid+1,r,k,val);
d[node]=d[node*2]+d[node*2+1];
}
void set(ll node,ll l,ll r,ll k,ll val){
if(l>k || r<k)return;
if(l==r){
d[node]=val;
return;
}
ll mid=(l+r)/2;
set(node*2,l,mid,k,val);
set(node*2+1,mid+1,r,k,val);
d[node]=d[node*2]+d[node*2+1];
}
};
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
const ll N=2e5;
ll n,q;
cin>>n>>q;
ll s[n],t[n];
set<ll>S,T,Z;
for(ll i=0;i<n;i++){
cin>>s[i]>>t[i];
S.insert(s[i]);
T.insert(t[i]);
Z.insert(s[i]+t[i]);
}
ll x[q],y[q],z[q];
vector<ll>ans(q,0);
for(ll i=0;i<q;i++){
cin>>x[i]>>y[i]>>z[i];
S.insert(x[i]);
T.insert(y[i]);
Z.insert(z[i]);
}
ll Sc=S.size(),Tc=T.size(),Zc=Z.size();
ll Sa[Sc],Ta[Tc],Za[Zc],cur=0;
for(auto x:S){
Sa[cur++]=x;
}
cur=0;
for(auto x:T){
Ta[cur++]=x;
}
cur=0;
for(auto x:Z){
Za[cur++]=x;
}
//case1 x[i]+y[i]>=z[i]
vector<ll>upd[N+5];
vector<pair<ll,ll>>ask[N+5];
for(ll i=0;i<n;i++){
ll p=lower_bound(Sa,Sa+Sc,s[i])-Sa;
ll q=lower_bound(Ta,Ta+Tc,t[i])-Ta;
upd[p].pb(q);
}
for(ll i=0;i<q;i++){
if(x[i]+y[i]>=z[i]){
ll p=lower_bound(Sa,Sa+Sc,x[i])-Sa;
ll q=lower_bound(Ta,Ta+Tc,y[i])-Ta;
ask[p].pb({q,i});
}
}
segtree sg(N);
for(ll i=N;i>=0;i--){
for(auto y:upd[i]){
sg.update(1,0,N,y,1);
}
for(auto [y,j]:ask[i]){
ans[j]=sg.query(1,0,N,y,N);
}
}
for(ll i=0;i<=N;i++){
sg.set(1,0,N,i,0);
upd[i].clear();
}
for(ll i=0;i<n;i++){
ll p=lower_bound(Za,Za+Zc,s[i]+t[i])-Za;
upd[p].pb(i);
}
vector<ll>que[N+5];
for(ll i=0;i<q;i++){
if(x[i]+y[i]<z[i]){
ll p=lower_bound(Za,Za+Zc,z[i])-Za;
que[p].pb(i);
}
}
for(ll i=N;i>=0;i--){
for(auto j:upd[i]){
ll p=lower_bound(Sa,Sa+Sc,s[j])-Sa;
sg.update(1,0,N,p,1);
}
for(auto j:que[i]){
ll p=lower_bound(Sa,Sa+Sc,x[j])-Sa;
ans[j]=sg.query(1,0,N,p,N);
}
}
for(ll i=0;i<=N;i++){
sg.set(1,0,N,i,0);
}
for(ll i=N;i>=0;i--){
for(auto j:upd[i]){
ll p=lower_bound(Ta,Ta+Tc,t[j])-Ta;
sg.update(1,0,N,p,1);
}
for(auto j:que[i]){
ll p=lower_bound(Ta,Ta+Tc,y[j])-Ta;
ans[j]-=sg.query(1,0,N,0,p-1);
}
}
for(ll i=0;i<q;i++){
cout<<ans[i]<<"\n";
}
}
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