N = int(input())
X, Y = [0] * N, [0] * N
for i in range(N):
    X[i], Y[i] = map(int, input().split())
    
ans = 10 ** 18
for i in range(305):
    for j in range(305):
        v = 0
        for k in range(N):
            v += abs(X[k] - i) + abs(Y[k] - j)
        ans = min(ans, v)
        
print(ans)