n = int(input())
nl = []
for _ in range(n):
    i, j = map(int, input().split())
    nl.append([i, j])

m = int(input())
ml = []
for k in range(m):
    i, j = map(int, input().split())
    ml.append([k+1, i, j])

l = [0] * (m+1)
for i, j in nl:
    for x, y, z in ml:
        if i >= y and j <= z:
            l[x] += 1

X = max(l)
if X == 0:
    print(0)
else:
    for i in range(len(l)):
        if l[i] == X:
            print(i)