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

acc = [[0]*(N+1) for _ in range(N)]
cost = [0]*N
for i in range(N):
    for j in range(N):
        id = A[i][j]-1
        cost[id] += max(i,j)
        if i==0:
            if j+1<=N:
                acc[id][j+1] += 1
                acc[id][-1] -= 1
        elif j==0:
            acc[id][1] -= 1
            acc[id][i+1] += 1
            acc[id][i+1] += 1
            acc[id][-1] -= 1
        elif i==j:
            if i*2+1<=N:
                acc[id][i*2+1] += 1
                acc[id][-1] -= 1
        elif i>j:
            acc[id][1] -= 1
            acc[id][i-j+1] += 1
            if i+j+1<=N:
                acc[id][i+j+1] += 1
                acc[id][-1] -= 1
        else:
            if i+j+1<=N:
                acc[id][i+j+1] += 1
                acc[id][-1] -= 1
res = 0
for i in range(N):
    for j in range(N):
        acc[i][j+1] += acc[i][j]
    for j in range(N):
        acc[i][j+1] += acc[i][j]
    res += cost[i]+min(acc[i][:-1])
print(res)