N = int(input())
A = [list(map(int,input().split())) for _ in range(N)]
X1 = [[0] * N for _ in range(N)]
X2 = [[0] * N for _ in range(N)]
X = [[0] * N for _ in range(N)]
ans = 0

for i in range(N):
    for j in range(N):
        a = A[i][j] - 1
        ans += j
        if i + j + 1 < N:
            X1[a][i+j+1] += 1
        if 0 <= i - j - 1:
            X2[a][i - j - 1] += 1

for i in range(N):
    tmp1 = 0
    tmp2 = 0
    for j in range(N):
        tmp1 += X1[i][j]
        tmp2 += tmp1
        X[i][j] += tmp2
    tmp1 = 0
    tmp2 = 0
    for j in reversed(range(N)):
        tmp1 += X2[i][j]
        tmp2 += tmp1
        X[i][j] += tmp2

for i in range(N):
    ans += min(X[i])

print(ans)