---

n = int(input())
a = [list(map(int, input().split())) for i in range(n)]
xs = [i[0] for i in a]
ys = [i[1] for i in a]
mx = min(xs)
MAXx= max(xs)
my = min(ys)
MAXy = max(ys)
for x in range(mx, MAXx + 1):
    for y in range(my, MAXy + 1):