n = int(input())
P = [list(map(int, input().split())) for _ in range(n)]
ans = 10**18
for x in range(1, 301):
    for y in range(1, 301):
        res = 0
        for i in range(n):
            cx, cy = P[i]
            res += abs(x - cx) + abs(y - cy)
        ans = min(ans, res)
print(ans)