#include using namespace std; short n,nn; int main() { cin >> n; nn = n; n = n * 2 - 1; short mid = 1,sig = (n - 1) / 2; for (int i = 1;i <= nn;i++) { for (int j = 1;j <= sig;j++) cout << ' '; for (int j = 1;j <= mid;j++) cout << i; for (int j = 1;j <= sig;j++) cout << ' '; cout << endl; mid += 2; sig--; } mid -= 2; sig++; for (int i = nn - 1;i > 0;i--) { for (int j = 1;j <= sig + 1;j++) cout << ' '; for (int j = 1;j <= mid - 2;j++) cout << i; for (int j = 1;j <= sig + 1;j++) cout << ' '; cout << endl; mid -= 2; sig++; } return 0; }