N = int(input())
X, Y = [], []
for i in range(N):
    x, y = map(int, input().split())
    X.append(x)
    Y.append(y)

Mx = max(X)
My = max(Y)
ans = float("inf")
for j in range(Mx+1):
    for k in range(My+1):
        tmp = 0
        for l in range(N):
            tmp += abs(X[l] - j) + abs(Y[l] - j)
        
        ans = min(ans, tmp)

print(ans)