# coding: utf-8
member = int(input())
member_like = []
for i in range(member):
    member_like.append(list(map(int, input().split())))
mentai = int(input())
kind = []
for i in range(mentai):
    kind.append(list(map(int, input().split())))
bought_mentai = [0 for i in range(mentai)]
for j in range(member):
    for k in range(mentai):
        if (member_like[j][0] >= kind[k][0]) and (member_like[j][1] <= kind[k][1]):
            bought_mentai[k] += 1
if max(bought_mentai) == 0:
    print(0)
else:
    a = [m for m, x in enumerate(bought_mentai) if x == max(bought_mentai)]
    for n in a:
        print(n + 1)