#include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long ll; #define fi first #define se second #define mp make_pair #define rep(i, n) for(int i=0;i=0;--i) const int inf=1e9+7; const ll mod=1e9+7; const ll mod1=998244353; const ll big=1e18; const double PI=2*asin(1); int main() { int N; cin>>N; int ans[N][N]; for(int i=0;iN) ans[i][j] = (i+j-N+2)/2; else ans[i][j] = (i+j+N+2)/2; } } } for(int i=0;i