import sys
input = sys.stdin.readline

N = int(input())
P = [list(map(int, input().split())) for _ in [0] * N]

route = [[] for _ in [0] * N]
for i in range(N - 1):
	for j in range(i + 1, N):
		d = abs(P[i][0] - P[j][0]) + abs(P[i][1] - P[j][1])
		route[i].append((j, d))
		route[j].append((i, d))

def func(d):
	c = [0] * N
	for v in range(N):
		if(c[v]):
			continue
		c[v] = 1
		que = [v]
		while(que):
			now = que.pop()
			for nv, nd in route[now]:
				if(nd <= d):
					continue
				if(c[nv] == 0):
					c[nv] = -c[now]
					que.append(nv)
				elif(c[nv] == c[now]):
					return False
	return True

ok = 4 * 10 ** 9 + 1
ng = 0
while(ok - ng > 1):
	d = (ok + ng) // 2
	if(func(d)):
		ok = d
	else:
		ng = d

ans = ok // 2
print(ans)