N = int(input())
A_list = [list(map(int, input().split())) for i in range(N)]

if N == 1:
    print(0)
    exit()

upper_count = ([0 for i in range(N)])
for i in range(N):
    for j in range(N):
        upper_count[A_list[i][j] - 1] += i if i > j else j

add_list = ([([0 for i in range(N)]) for j in range(N - 1)])
minus_list = ([([0 for i in range(N)]) for j in range(N - 1)])

for i in range(0, N - 1):
    for j in range(i + 1):
        add_list[i][A_list[i - j][j] - 1] += 1
        minus_list[-(i + 1)][A_list[N - 1 - (i - j)][j] - 1] += 1
    if i != 0:
        add_list[i] = list(map(sum, zip(add_list[i - 1], add_list[i])))
        minus_list[-(i + 1)] = list(map(sum, zip(minus_list[-i], minus_list[-(i + 1)])))


for i in range(len(minus_list) - 1):
    add_list[i + 1] = list(map(sum, zip(add_list[i + 1], add_list[i])))
    minus_list[i + 1] = list(map(sum, zip(minus_list[i + 1], minus_list[i])))


result_list = [0 for i in range(N)]
for add, minus in zip(add_list, minus_list):
    for i in range(N):
        if add[i] - minus[i] < result_list[i]:
            result_list[i] = add[i] - minus[i]

print(sum(upper_count) + sum(result_list))