n=int(input())
A=[[*map(int,input().split())] for _ in range(n)]
m=int(input())
X=[[*map(int,input().split())] for _ in range(m)]
b=[0]*len(X)
for a in A:
    for i,x in enumerate(X):
        if x[0]<=a[0] and x[1]>=a[1]:b[i]+=1
ans=[i+1 for i,v in enumerate(b) if v==max(b)]
if max(b)==0:ans=[0]
print(*ans,sep='\n')