#include <bits/stdc++.h>
#define int long long
using namespace std;
#define N 100001
int S[N], T[N];
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, q; cin >> n >> q;
for (int i = 1; i <= n; i++)
cin >> S[i] >> T[i];
for (int i = 1; i <= q; i++) {
int x, y, z; cin >> x >> y >> z;
int ans = 0;
for (int j = 1; j <= n; j++)
ans += (S[j] >= x && T[j] >= y && (S[j] + T[j]) >= z);
cout << ans << endl;
}
return 0;
}
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