#include <bits/stdc++.h>
using namespace std;

int main(){
	int n,m;
	int member[10000][2],mentaiko[1000];
	cin >> n;
	for (int i=0;i<n;i++)
		cin >> member[i][0] >> member[i][1];
	cin >> m;
	for (int i=0;i<m;i++){
		int mentai[2];
		cin >> mentai[0] >> mentai[1];
		mentaiko[i]=0;
		for (int j=0;j<n;j++){
			if (mentai[0]<=member[j][0]&& mentai[1]>=member[j][1])
				mentaiko[i]++;
		}
	}
	int i=0,max=0;
	string str="";
	for (int i=0;i<m;i++){
	    if (mentaiko[i]==0) continue;
		if (max < mentaiko[i]){
			max = mentaiko[i];
			char temp[6];
			sprintf(temp,"%d\n",i+1);
			str = temp;
		}
		else if(max == mentaiko[i]){
			char temp[6];
			sprintf(temp,"%d\n",i+1);
			str += temp;
		}
	}
	if(str=="") str="0\n";
	cout << str;
}