INF = 10 ** 20
MOD = 10 ** 9 + 7
import sys
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)
from itertools import accumulate

def main():
    n = int(input())
    a = [list(map(int,input().split())) for _ in range(n)]

    cuml = [[0] * n for _ in range(n)]
    cumr = [[0] * n for _ in range(n)]
    Js = [0] * n
    for i in range(n):
        for j in range(n):
            x = a[i][j] - 1
            if i + j  + 1 < n:
                cuml[x][i + j + 1] += 1
            if i - j  - 1 >= 0:
                cumr[x][i - j - 1] += 1
            Js[x] += j
    
    ans = 0
    for x in range(n):
        for i in range(n - 1):
            cuml[x][i + 1] += cuml[x][i]
        for i in range(n - 1):
            cuml[x][i + 1] += cuml[x][i]
        
        
        for i in range(n - 2,-1,-1):
            cumr[x][i] += cumr[x][i + 1]
        for i in range(n - 2,-1,-1):
            cumr[x][i] += cumr[x][i + 1]
        
        ans += min(cumr[x][i] + cuml[x][i] for i in range(n)) + Js[x]
    print(ans)

if __name__ == '__main__':
    main()