n = int(input())
xy = [tuple(map(int,input().split())) for _ in range(n)]
ans = 600*n
for i in range(1,301):
    for j in range(1,301):
        d = 0
        for x,y in xy: d += abs(i-x)+abs(j-y)
        ans = min(ans,d)
print(ans)