#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
using namespace std;
const int MAX = 1e5 + 5;
const int TREE_SIZE = MAX * 17 * 17;
const int MAXVAL = (1 << 17) - 1;
int tree1D[TREE_SIZE], L[TREE_SIZE], R[TREE_SIZE];
int nxt = MAX * 4;
void update1D(int node, int l, int r, int pos, int val){
tree1D[node] += val;
if(l == r) return;
int mid = (l + r) / 2;
if(pos <= mid){
if(!L[node]) L[node] = ++nxt;
update1D(L[node], l, mid, pos, val);
}
else{
if(!R[node]) R[node] = ++nxt;
update1D(R[node], mid + 1, r, pos, val);
}
}
int ask1D(int node, int l, int r, int ql, int qr){
if(ql > r || qr < l){
return 0;
}
if(ql <= l && r <= qr){
return tree1D[node];
}
int mid = (l + r) / 2;
int ans = 0;
if(L[node]) ans += ask1D(L[node], l, mid, ql, qr);
if(R[node]) ans += ask1D(R[node], mid + 1, r, ql, qr);
return ans;
}
void update(int node, int l, int r, int x, int y, int val){
update1D(node, 0, MAXVAL, x, val);
if(l == r) return;
int mid = (l + r) / 2;
if(y <= mid){
update(node * 2 + 1, l, mid, x, y, val);
}
else{
update((node + 1) * 2, mid + 1, r, x, y, val);
}
}
int ask(int node, int l, int r, int x1, int y1, int x2, int y2){
if(y1 > r || y2 < l){
return 0;
}
if(y1 <= l && r <= y2){
return ask1D(node, 0, MAXVAL, x1, x2);
}
int mid = (l + r) / 2;
return ask(node * 2 + 1, l, mid, x1, y1, x2, y2) + ask((node + 1) * 2, mid + 1, r, x1, y1, x2, y2);
}
bool comp(pii a, pii b){
return a.first + a.second < b.first + b.second;
}
pii arr[MAX];
array<int, 4> q[MAX];
int ans[MAX];
int main(){
int n, m; scanf("%d %d", &n, &m);
for (int i = 0; i < n; i++)
{
scanf("%d %d", &arr[i].first, &arr[i].second);
update(0, 0, MAX, arr[i].first, arr[i].second, 1);
}
sort(arr, arr + n, comp);
for (int i = 0; i < m; i++)
{
scanf("%d %d %d", &q[i][1], &q[i][2], &q[i][0]);
q[i][3] = i;
}
sort(q, q + m);
int last = 0;
for (int i = 0; i < m; i++)
{
while(last != n && arr[last].first + arr[last].second < q[i][0]){
update(0, 0, MAX, arr[last].first, arr[last].second, -1);
++last;
}
int x = q[i][1], y = q[i][2];
ans[q[i][3]] = ask(0, 0, MAX, x, y, MAX, MAX);
}
for (int i = 0; i < m; i++)
{
cout << ans[i] << '\n';
}
}
