#yukicoder390B

N=int(input()); P=[]; ans=2*10**18
for _ in range(N): X,Y=list(map(int,input().split())); P.append((X,Y))
for h in range(301):
    for w in range(301):
        cnt=0
        for x,y in P:
            cnt+=abs(h-x)+abs(w-y)
        ans=min(ans,cnt)
print(ans)