N = int(input())
XY = [tuple(map(int, input().split())) for _ in range(N)]

ans = float('inf')
for x in range(1, 301):
	for y in range(1, 301):
		s = 0
		for X, Y in XY:
			s += abs(x - X) + abs(y - Y)
		ans = min(ans, s)
print(ans)