#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int int_fast64_t
#define ul uint_fast32_t
#define ll int_fast64_t
#define dll long double
#define ull uint_fast64_t
#define spektar this_thread::sleep_for(chrono::milliseconds(50))
ll log2floor(ull n){ return 63-__builtin_clzll(n); }
void solve(){
int n,m;
cin >> n >> m;
vector<array<int,2>> k(n);
for(auto& [a,b]:k) cin >> a >> b;
sort(k.begin(),k.end());
for(int i=0; i<m; i++){
int a,b;
cin >> a >> b;
multiset<array<int,2>> V;
vector<array<int,2>> kkk;
for(int j=0; j<n; j++){
if(k[j][0]>=a && k[j][1]<=b){
V.insert(k[j]);
kkk.push_back(k[j]);
}
}
sort(kkk.begin(),kkk.end());
map<array<int,2>,int> idx;
for(int j=0; j<kkk.size(); j++){
idx[kkk[j]]=j;
}
map<int,int> kk;
vector<bool> used(kkk.size());
for(int j=0; j<kkk.size(); j++){
kk[j]=-1;
for(int r=j+1; j<kkk.size(); r++){
if(used[r]) continue;
if(kkk[r][0]>kkk[j][0] && kkk[r][1]>kkk[j][1]){
used[r]=true;
kk[j]=r;
break;
}
}
}
int s=0;
while(V.size()){
auto it=V.begin();
if(kk[idx[*it]]==-1){
V.erase(it);
s++;
continue;
}
V.erase(it);
}
cout << s << endl;
}
}
signed main(){
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int t=1;
//cin >> t;
while(t--){
solve();
}
}
