a = int(input()) m = [0] * a n = [0] * a sumn = 0 for i in range(a): b = input().split() n[i] = int(b[0]) m[i] = int(b[1])

n.sort() for l in range(a): n[l] -= l n.sort() m.sort() for j in range(a): sumn += int(abs(m[j] - m[a // 2])) sumn += int(abs(n[j] - n[a // 2])) print(sumn)