#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include "bits/stdc++.h"
using namespace std;
using i64 = long long;
const i64 MOD = i64(1e9) + 7;
const i64 INF = i64(1e18) + 7;
struct Data{
Data(int x, int y, int z, int idx, bool student) : x(x), y(y), z(z), idx(idx), student(student){}
int x, y, z, idx;
bool student;
};
struct MiniSegtree{
int n;
vector<int> elm;
MiniSegtree(int n = 1) : n(n), elm(n + 1, 0){
}
void add(int x){
for(++x; x <= n; x += x & -x)
++elm[x];
}
int get(int r){
int res = 0;
for(; r > 0; r -= r & -r)
res += elm[r];
return res;
}
};
struct Segtree{
int n;
vector<vector<int>> elements;
vector<MiniSegtree> seg;
vector<map<int,int>> elm_inv;
Segtree(int n) : n(n), elements(n + 1), elm_inv(n + 1), seg(n + 1){
}
void set_val(int x, int y){
for(++x; x <= n; x += x & -x)
elements[x].emplace_back(y);
}
void build(){
for(int i = 0; i <= n; ++i){
sort(elements[i].begin(), elements[i].end());
elements[i].push_back(MOD);
for(int j = 0; j < elements[i].size(); ++j)
elm_inv[i][elements[i][j]] = j;
seg[i] = MiniSegtree(elements[i].size());
}
}
void add(int x, int y){
for(++x; x <= n; x += x & -x)
seg[x].add(elm_inv[x][y]);
}
int get_sum(int r, int y){
int res = 0;
for(; r > 0; r -= r & -r)
res += seg[r].get(elm_inv[r].lower_bound(y)->second);
return res;
}
};
signed main(){
int n, q;
cin >> n >> q;
vector<int> s(n), t(n);
for(int i = 0; i < n; ++i)
cin >> s[i] >> t[i];
vector<Data> data;
for(int i = 0; i < q; ++i){
int x, y, z;
cin >> x >> y >> z;
data.emplace_back(x, y, z, i, false);
}
for(int i = 0; i < n; ++i)
data.emplace_back(s[i], t[i], s[i] + t[i], i, true);
map<pair<bool, int>, int> x_idxes, y_idxes;
sort(data.begin(), data.end(), [](const auto& a, const auto& b){return a.x == b.x ? a.student > b.student : a.x > b.x;});
for(int i = 0; i < data.size(); ++i)
x_idxes[make_pair(data[i].student, data[i].idx)] = i;
sort(data.begin(), data.end(), [](const auto& a, const auto& b){return a.y == b.y ? a.student > b.student : a.y > b.y;});
for(int i = 0; i < data.size(); ++i)
y_idxes[make_pair(data[i].student, data[i].idx)] = i;
Segtree seg(n + q);
for(auto& d : data){
int x_idx = x_idxes[make_pair(d.student, d.idx)];
int y_idx = y_idxes[make_pair(d.student, d.idx)];
seg.set_val(x_idx, y_idx);
}
sort(data.begin(), data.end(), [](const auto& a, const auto& b){return a.z == b.z ? a.student > b.student : a.z > b.z;});
seg.build();
vector<int> ans(q, -1);
for(auto& d : data){
int x_idx = x_idxes[make_pair(d.student, d.idx)];
int y_idx = y_idxes[make_pair(d.student, d.idx)];
if(d.student){
seg.add(x_idx, y_idx);
}
else{
ans[d.idx] = seg.get_sum(x_idx, y_idx);
}
}
for(int i = 0; i < q; ++i)
cout << ans[i] << endl;
}
