n=int(input())
p=[tuple(map(int,input().split())) for i in range(n)]
m=int(input())
q=[tuple(map(int,input().split())) for i in range(m)]
c=[0]*m
for i in range(m):
	x,y=q[i]
	for j in range(n):
		a,b=p[j]
		c[i]+=x<=a and y>=b
C=max(c)
if C==0:
	print(0)
	exit()
for i in range(m):
	if c[i]==C:
		print(i+1)