import java.util.Scanner;
public class NumericDiamond{
public static void main(String args []){
Scanner sc = new Scanner(System.in);
System.out.println("Enter the no of rows");
int n = sc.nextInt();
for(int i=1; i<=n;i++){
for(int j=1; j<=n-i;j++){
System.out.print(" ");
}
for(int j=i;j>=1;j--){
System.out.print(j);
}
for(int j=2;j<=i;j++){
System.out.print(j);
}
System.out.println();
}
//to print lower half
for(int i=n; i>=1;i--){
for(int j=1; j<=n-i;j++){
System.out.print(" ");
}
for(int j=i;j>=1;j--){
System.out.print(j);
}
for(int j=2;j<=i;j++){
System.out.print(j);
}
System.out.println();
}
}
}
