#include<bits/stdc++.h>
using namespace std;
long long n, q;
vector <long long> v[2105];
pair<long long, long long> e[2105];
bool check[2105], conceived[2105];
pair<long long, long long> arr[2105];
long long x, y, w;
bool cmp(long long x, long long y) {
return arr[x].first < arr[y].first;
}
void dfs(long long x)
{
check[x] = 1;
for (long long i = 0; i < v[x].size(); i++)
{
if (!check[v[x][i]] && conceived[v[x][i]])
{
check[v[x][i]] = true;
dfs(v[x][i]);
break;
}
}
}
int main() {
cin >> n >> q;
for (long long i = 1; i <= n; i++) cin >> arr[i].first >> arr[i].second;
for (long long i = 1; i <= n; i++) {
for (long long j = 1; j <= n; j++) {
if (arr[i].first < arr[j].first && arr[i].second < arr[j].second) {
v[i].push_back(j);
}
}
}
for (long long i = 1; i <= n; i++) {
sort(v[i].begin(), v[i].end(), cmp);
}
while (q--) {
cin >> x >> y;
memset(check, 0, sizeof(check));
memset(conceived, 0, sizeof(conceived));
vector <long long> cor;
for (long long i = 1; i <= n; i++) {
if (arr[i].first >= x && arr[i].second <= y) {
conceived[i] = 1;
cor.push_back(i);
}
}
w = 0;
sort(cor.begin(), cor.end(), cmp);
for (auto x: cor) {
if (!check[x]) {
w++;
dfs(x);
}
}
cout << w << "\n";
}
}
