N = int(input())

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

ans = 10**10
for i in range(1,301):
    for j in range(1,301):
        tmp = 0
        for a,b in G:
            aa = abs(i-a)
            bb = abs(j-b)
            tmp+=(aa+bb)
        ans = min(ans,tmp)

print(ans)