#include <iostream>
#include <vector>

int main() {
    int N;
    std::cin >> N;

    std::vector<std::vector<int>> A(N, std::vector<int>(N));
    std::vector<int> b(N), c(N);

    for (int i = 0; i < N; i++)
        for (int j = 0; j < N; j++) {
            std::cin >> A[i][j];
            A[i][j]--;
            b[A[i][j]] += std::max(i, j);
            c[A[i][j]] += std::max(i, j);
        }

    for (int k = 1; k < N; k++) {
        for (int i = 0; i < k; i++)
            for (int j = 0; j < k - i; j++)
                b[A[i][j]]++;

        for (int i = k; i < N; i++)
            for (int j = 0; j <= i - k; j++)
                b[A[i][j]]--;

        for (int i = 0; i < N; i++)
            c[i] = std::min(c[i], b[i]);
    }
          
    int ans = 0;
    for (int i = 0; i < N; i++)
        ans += c[i];
    std::cout << ans << "\n";
}