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(1,1,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];
}
};
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
ll n,q;
cin>>n>>q;
ll s[n],t[n];
const ll N=2e5;
vector<ll>upd[N+5];
for(ll i=0;i<n;i++){
cin>>s[i]>>t[i];
upd[s[i]].pb(t[i]);
}
ll x[q],y[q],z[q];
vector<ll>ans(q,0);
vector<pair<ll,ll>>ask[N+5];
for(ll i=0;i<q;i++){
cin>>x[i]>>y[i]>>z[i];
ask[x[i]].pb({y[i],i});
}
segtree sg(N);
for(ll i=N;i>=0;i--){
for(auto y:upd[i]){
sg.update(1,1,N,y,1);
}
for(auto [y,j]:ask[i]){
ans[j]=sg.query(1,1,N,y,N);
}
}
for(ll i=0;i<q;i++){
cout<<ans[i]<<"\n";
}
}
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