#include <bits/stdc++.h>
using namespace std;
int segmenta[262144], segmentb[262144];
unordered_map<int,int> compressa, compressb;
void update(int x, int pos, int *segment) {
pos += 131072;
while (pos > 0) {
segment[pos] += x; pos /= 2;
}
}
int range(int a, int b, int *segment) {
int val = 0;
a += 131072; b += 131072;
while (a <= b) {
if (a%2 == 1) {val += segment[a++];}
if (b%2 == 0) {val += segment[b--];}
a/=2; b/=2;
}
return val;
}
void compress(vector<int> &arr, unordered_map<int,int> &compress) {
sort(arr.begin(), arr.end());
int count = 0; compress[arr[0]] = 0;
for (int i=1;i<arr.size();i++) {
if (arr[i] > arr[i-1]) {
count++;
compress[arr[i]] = count;
}
}
}
void querycompress(vector<vector<int>> &q, vector<int> &arra, vector<int> &arrb) {
int pos;
for (int i=0;i<q.size();i++) {
pos = lower_bound(arra.begin(), arra.end(), q[i][0]) - arra.begin();
if (pos == arra.size()) {
q[i][0] = compressa[arra[pos-1]] + 1;
} else {
q[i][0] = compressa[arra[pos]];
}
pos = lower_bound(arrb.begin(), arrb.end(), q[i][1]) - arrb.begin();
if (pos == arrb.size()) {
q[i][1] = compressb[arrb[pos-1]] + 1;
} else {
q[i][1] = compressb[arrb[pos]];
}
}
}
int main() {
int n, q; cin >> n >> q;
vector<vector<int>> ppl(n, vector<int>(3));
vector<int> arra(n), arrb(n), ansvec(q), query(4);
vector<vector<int>> aq, bq;
for (int i=0;i<n;i++) {
cin >> ppl[i][0] >> ppl[i][1];
ppl[i][2] = ppl[i][0] + ppl[i][1];
arra[i] = ppl[i][0]; arrb[i] = ppl[i][1];
}
for (int i=0;i<q;i++) {
cin >> query[0] >> query[1] >> query[2]; query[3] = i;
if (query[2] <= query[0] + query[1]) {
aq.push_back(query);
} else {
bq.push_back(query);
}
}
compress(arra, compressa); compress(arrb, compressb);
for (int i=0;i<n;i++) {
ppl[i][0] = compressa[ppl[i][0]];
ppl[i][1] = compressb[ppl[i][1]];
//cout << ppl[i][0] << ' ' << ppl[i][1] << '\n';
}
querycompress(aq, arra, arrb); querycompress(bq, arra, arrb);
for (int i=0;i<262144;i++) {segmentb[i] = 0;}
sort(ppl.begin(), ppl.end(), greater<vector<int>>());
sort(aq.begin(), aq.end(), greater<vector<int>>());
//for (int i=0;i<aq.size();i++) {
// cout << aq[i][0] << ' ' << aq[i][1] << ' ' << aq[i][2] << ' ' << aq[i][3] << '\n';
//}
int tracker = 0;
for (int i=0;i<aq.size();i++) {
while (tracker < n && ppl[tracker][0] >= aq[i][0]) {
update(1, ppl[tracker][1], segmentb);
tracker++;
}
ansvec[aq[i][3]] = range(aq[i][1], 131071, segmentb);
}
for (int i: ansvec) {
cout << i << '\n';
}
}
