#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define int long long
using namespace std;
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T, null_type, greater_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define N 1000000
struct Score {
int x, y, z, i;
bool operator < (const Score &o) const { return make_tuple(z, x, y) > make_tuple(o.z, o.x, o.y); }
} a[N], qu[N];
int ans[N];
struct SegTree {
int rl, rr, mid;
SegTree *l, *r;
oset<int> st;
SegTree(int rl, int rr) : rl{rl}, rr{rr}, mid{(rl+rr)/2}, l{nullptr}, r{nullptr} {}
void update(int x, int y) {
st.insert(y);
if (rl == rr) return;
if (x <= mid) {
if (l == nullptr) l = new SegTree(rl, mid);
l->update(x, y);
}
else {
if (r == nullptr) r = new SegTree(mid+1, rr);
r->update(x, y);
}
}
int query(int x, int y) {
if (rr < x)
return 0;
if (x <= rl)
return st.order_of_key(y-1);
int ans = 0;
if (l != nullptr) ans += l->query(x, y);
if (r != nullptr) ans += r->query(x, y);
return ans;
}
};
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, q; cin >> n >> q;
for (int i = 0; i < n; i++) {
cin >> a[i].x >> a[i].y;
a[i].z = a[i].x + a[i].y;
}
sort(a, a+n);
for (int i = 0; i < q; i++) {
cin >> qu[i].x >> qu[i].y >> qu[i].z;
qu[i].i = i;
}
sort(qu, qu+q);
SegTree seg(1LL, 20000000000LL);
int i = 0;
for (int qi = 0; qi < q; qi++) {
for (; i < n && a[i].z >= qu[qi].z; i++)
seg.update(a[i].x, a[i].y);
ans[qu[qi].i] = seg.query(qu[qi].x, qu[qi].y);
}
for (int i = 0; i < q; i++)
cout << ans[i] << '\n';
return 0;
}
