#include<deque>
#include<queue>
#include<vector>
#include<algorithm>
#include<iostream>
#include<set>
#include<cmath>
#include<tuple>
#include<string>
#include<chrono>
#include<functional>
#include<iterator>
#include<random>
#include<unordered_set>
#include<unordered_map>
#include<array>
#include<map>
#include<bitset>
#include<iomanip>
#include<list>
#include <numeric>
using namespace std;
typedef unsigned long long int ulint;
typedef long long int llint;
typedef long double lldo;
#define mp make_pair
#define mt make_tuple
#define pub push_back
#define puf push_front
#define pob pop_back
#define pof pop_front
#define fir first
#define sec second
#define res resize
#define ins insert
#define era erase
#define RE return 0
//ios::sync_with_stdio(false);
//std::cin.tie(0);
//<< setprecision(20)
const int mod=(int)1e9+7;
const llint big=(llint)(2.19e15+1)*18;
const long double pai=3.141592653589793238462643383279502884197;
const long double ena=2.71828182845904523536;
const long double eps=1e-7;
template <class T,class U>bool mineq(T& a,U b){if(a>b){a=b;return true;}return false;}
template <class T,class U>bool maxeq(T& a,U b){if(a<b){a=b;return true;}return false;}
template <class T> void soun(T& ar)
{sort(ar.begin(),ar.end());ar.erase(unique(ar.begin(),ar.end()),ar.end());}
llint gcd(llint a,llint b){if(a%b==0){return b;}else{return gcd(b,a%b);}}
llint lcm(llint a,llint b){return a/gcd(a,b) *b;}
template<class T,class U> auto LB(T& ve,U in){return lower_bound(ve.begin(),ve.end(),in);}
template<class T,class U> auto UB(T& ve,U in){return upper_bound(ve.begin(),ve.end(),in);}
template<class T,class U> auto LBI(T& ve,U in){return LB(ve,in)-ve.begin();}
template<class T,class U> auto UBI(T& ve,U in){return UB(ve,in)-ve.begin();}
template<class T> void SO(T& ve){sort(ve.begin(),ve.end());}
template<class T> void REV(T& ve){reverse(ve.begin(),ve.end());}
class seg{
public:
	vector<int> val;
	seg(void){val.res(262144);}
	void cha(int bas,int hen){//bas以上の要素をhen足す
		bas+=131072;bas--;
		while(bas>0){
			if(bas%2==0){val[bas+1]+=hen;}
			bas/=2;
		}
	}
	int ask(int bas){
		bas+=131072;
		int ans=0;
		while(bas>0){ans+=val[bas];bas/=2;}
		return ans;
	}
};
int main(void){
	//セグ木で殴る問題集 セグ木を使うことにより、O(m+nlog(n+m))になり、早くなります
	//まず座圧します
	int i,n,m;cin>>n;
	vector<tuple<int,int,int>>aaa;//人と明太子を合わせてソート
	for(i=0;i<n;i++){
		int a,b;cin>>a>>b;
		aaa.pub(mt(a,mod,b));
	}
	cin>>m;
	for(i=0;i<m;i++){
		int x,y;cin>>x>>y;
		aaa.pub(mt(x,i,y));
	}
	SO(aaa);REV(aaa);
	vector<int>atu(n+m);//辛さを座圧します
	for(i=0;i<aaa.size();i++){atu[i]=get<2>(aaa[i]);}
	soun(atu);
	vector<int>ans(m);
	seg ki;
	for(i=0;i<aaa.size();i++){
		int ka,qu;ka=LBI(atu,get<2>(aaa[i]));qu=get<1>(aaa[i]);
		if(qu==mod){ki.cha(ka,1);}//人
		else{ans[qu]=ki.ask(ka);}
	}
	int sai=0;
	for(i=0;i<m;i++){maxeq(sai,ans[i]);}
	if(sai==0){cout<<"0\n";RE;}
	for(i=0;i<m;i++){if(sai==ans[i]){cout<<i+1<<endl;}}
	RE;
}