/* https://yukicoder.me/problems/no/1028 難読なだけ? ドローンの移動回数はx座標とy座標の差の最大値 凸関数っぽいので三分探索できる 計算量はO(N*N*logN) */ #include using namespace std; #define rep(i,n,m) for(int (i)=(n);(i)<(m);(i)++) #define rrep(i,n,m) for(int (i)=(n);(i)>(m);(i)--) using ll = long long; const ll mod = 998244353; int main(){ int N; cin >> N; vector>> a(N,vector> (0)); int na; rep(i,0,N){ rep(j,0,N){ cin >> na; a[na-1].push_back(make_pair(i,j)); } } int ans = 0,l,r,m1,m2,s1,s2; rep(i,0,N){ l = 0; r = N+1; while (r-l > 3){ m1 = (l*2+r)/3; m2 = (l+r*2)/3; s1 = 0; s2 = 0; rep (j,0,N){ s1 += max(abs(m1-a[i][j].first) , a[i][j].second); } rep (j,0,N){ s2 += max(abs(m2-a[i][j].first) , a[i][j].second); } if (s1 > s2){ l = m1; }else{ r = m2; } } int rmin = 1000000000; rep(k,l-2,r+2){ s1 = 0; rep (j,0,N){ s1 += max(abs(k-a[i][j].first) , a[i][j].second); } rmin = min(rmin,s1); } ans += rmin; } cout << ans << endl; }