#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } templatebool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- template int findMin(int L, int R, Func f) { //[L, R) int lo = L - 1, hi = R - 1; while (lo + 1 != hi) { int mi = (lo + hi) / 2; if (f(mi) <= f(mi + 1)) hi = mi; else lo = mi; } return hi; } /*---------------------------------------------------------------------------------------------------             ∧_∧       ∧_∧  (´<_` )  Welcome to My Coding Space!      ( ´_ゝ`) /  ⌒i @hamayanhamayan0     /   \    | |     /   / ̄ ̄ ̄ ̄/  |   __(__ニつ/  _/ .| .|____      \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int N, A[1010][1010]; //--------------------------------------------------------------------------------------------------- vector> houses[1010]; int employee; int f(int x) { int tot = 0; fore(p, houses[employee]) tot += max(abs(x - p.first), p.second); return tot; } //--------------------------------------------------------------------------------------------------- void _main() { cin >> N; rep(x, 0, N) rep(y, 0, N) cin >> A[x][y]; rep(x, 0, N) rep(y, 0, N) houses[A[x][y]].push_back({ x, y }); int ans = 0; rep(e, 1, N + 1) { employee = e; int optx = findMin(0, N, f); ans += f(optx); } cout << ans << endl; }