// Born_To_Laugh - Hughie Do
#include <bits/stdc++.h>
#define alle(AC) AC.begin(), AC.end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
[[maybe_unused]] const int MOD = 998244353, INF = 1e9 + 7;
struct Fenwick
{
int n;
vector<int> bit;
void init(int len){
n = len;
bit.assign(n + 1, 0);
}
Fenwick(int len = 0){
init(len);
}
void upd(int pos, int val){
for(; pos<=n; pos += pos & -pos) bit[pos] += val;
}
int qr(int pos){
int ans = 0;
for(; pos>0; pos -= pos & -pos) ans += bit[pos];
return ans;
}
int qr(int l, int r){
return qr(r) - qr(l - 1);
}
};
const int maxn = 5e5 + 10;
int n, q;
int a[maxn], b[maxn];
int x[maxn], y[maxn], z[maxn];
Fenwick ft[4];
/*
ft1 = cnt(a >= x, b >= y)
ft2 = cnt(a + b >= z, a < x)
ft3 = cnt(a + b >= z, b < y)
*/
ll ans[maxn];
int num[maxn];//a + b
vector<int> upda[maxn][4];//update list
vector<pair<int, int>> qrspe[maxn];// ans[qr.se] += qr.fi;
vector<int> qr0[maxn];//qr[i] = qr a + b >= i
vector<pair<int, int>> qr1[maxn];//ans[qr.se] -= qr.fi;
vector<pair<int, int>> qr2[maxn];//ans[qr.se] -= qr.fi;
vector<int> temp[4];//a+b/z ; a/x ; b/y
int get_pos(int x, int id){
return int(lower_bound(alle(temp[id]), x) - temp[id].begin());
}
void solve(){
cin >> n >> q;
temp[1].push_back(-INF);
temp[2].push_back(-INF);
temp[3].push_back(-INF);
for(int i=1; i<=n; ++i){
cin >> a[i] >> b[i];
temp[1].push_back(a[i] + b[i]);
temp[2].push_back(a[i]);
temp[3].push_back(b[i]);
}
for(int i=1; i<=q; ++i){
cin >> x[i] >> y[i] >> z[i];
temp[1].push_back(z[i]);
temp[2].push_back(x[i]);
temp[3].push_back(y[i]);
temp[1].push_back(z[i] - 1);
temp[2].push_back(x[i] - 1);
temp[3].push_back(y[i] - 1);
}
sort(alle(temp[1]));
sort(alle(temp[2]));
sort(alle(temp[3]));
temp[1].erase(unique(alle(temp[1])), temp[1].end());
temp[2].erase(unique(alle(temp[2])), temp[2].end());
temp[3].erase(unique(alle(temp[3])), temp[3].end());
ft[1].init(temp[1].size() + 5);
ft[2].init(temp[2].size() + 5);
ft[3].init(temp[3].size() + 5);
for(int i=1; i<=n; ++i){
num[get_pos(a[i] + b[i], 1)]++;
upda[get_pos(a[i], 2)][1].push_back(get_pos(b[i], 3));
upda[get_pos(a[i] + b[i], 1)][2].push_back(get_pos(a[i], 2));
upda[get_pos(a[i] + b[i], 1)][3].push_back(get_pos(b[i], 3));
}
for(int i=1; i<=q; ++i){
if(x[i] + y[i] >= z[i]){
qrspe[get_pos(x[i], 2)].push_back({get_pos(y[i], 3), i});
}
else{
qr0[get_pos(z[i], 1)].push_back(i);
qr1[get_pos(z[i], 1)].push_back({get_pos(x[i] - 1, 2), i});
qr2[get_pos(z[i], 1)].push_back({get_pos(y[i] - 1, 3), i});
}
}
ll cnt = 0;
for(int i=temp[1].size(); i>=1; --i){
cnt += num[i];
for(auto &elm: qr0[i]) ans[elm] += cnt;
}
for(int i=temp[2].size(); i>=1; --i){
for(auto &elm: upda[i][1]) ft[1].upd(elm, 1);
for(auto &elm: qrspe[i]){
ans[elm.se] = ft[1].qr(elm.fi, ft[1].n);
}
}
for(int i=temp[1].size(); i>=1; --i){
for(auto &elm: upda[i][2]) ft[2].upd(elm, 1);
for(auto &elm: qr1[i]){
ans[elm.se] -= ft[2].qr(elm.fi);
}
}
for(int i=temp[1].size(); i>=1; --i){
for(auto &elm: upda[i][3]) ft[3].upd(elm, 1);
for(auto &elm: qr2[i]){
ans[elm.se] -= ft[3].qr(elm.fi);
}
}
for(int i=1; i<=q; ++i){
cout << ans[i] << '\n';
}
}
signed main(){
// freopen("inp.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
solve();
}
