/**
* Author: trviet
* Studies at: Le Hong Phong High School for the Gifted
**/
#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
constexpr int maxn = 1e6 + 6;
int n, q, k, bit[maxn], res[maxn];
void update(int i, int v)
{
for (; i <= k; i += i & -i)
bit[i] += v;
}
int get(int i)
{
int res = 0;
for (; i > 0; i -= i & -i)
res += bit[i];
return res;
}
struct Event
{
int x, y, z, id;
bool operator < (Event o) const {
return (x == o.x ? id < o.id : x > o.x);
}
} qr[maxn];
void ReadData()
{
cin.tie(0)->sync_with_stdio(0);
cin >> n >> q;
k = n + q;
for (int i = 1; i <= n; ++i)
{
cin >> qr[i].x >> qr[i].y;
qr[i].z = qr[i].x + qr[i].y;
}
for (int i = n + 1; i <= n + q; ++i)
{
cin >> qr[i].x >> qr[i].y >> qr[i].z;
qr[i].id = i;
}
}
void Divide(int l, int r)
{
if (l == r) return;
int m = (l + r) >> 1;
Divide(l, m), Divide(m + 1, r);
vector<Event> L, R;
for (int i = l; i <= m; ++i)
if (qr[i].id == 0)
L.push_back(qr[i]);
for (int i = m + 1; i <= r; ++i)
if (qr[i].id != 0)
R.push_back(qr[i]);
sort(all(L), [&](Event a, Event b) { return a.y > b.y; });
sort(all(R), [&](Event a, Event b) { return a.y > b.y; });
int j = 0;
for (int i = 0; i < R.size(); ++i)
{
while (j < L.size() && L[j].y >= R[i].y)
update(L[j++].z, 1);
res[R[i].id] += get(k) - get(R[i].z - 1);
}
for (int i = 0; i < j; ++i)
update(L[i].z, -1);
}
void Solve()
{
vector<int> values;
for (int i = 1; i <= n + q; ++i)
values.push_back(qr[i].z);
sort(all(values));
values.resize(unique(all(values)) - values.begin());
for (int i = 1; i <= n + q; ++i)
qr[i].z = lower_bound(all(values), qr[i].z) - values.begin() + 1;
sort(qr + 1, qr + 1 + n + q);
Divide(1, n + q);
for (int i = n + 1; i <= n + q; ++i)
cout << res[i] << "\n";
}
int main()
{
ReadData();
Solve();
return 0;
}
