N=int(input())
X,Y=[],[]
for i in range(N):
    x,y=map(int,input().split())
    X.append(x)
    Y.append(y)
X.sort()
Y.sort()
ans=(sum(abs(x1-x0) for x0,x1 in zip(X,X[::-1]))+sum(abs(y1-y0) for y0,y1 in zip(Y,Y[::-1])))//2
print(ans)