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import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
int cx=n/2,cy=n/2;;
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
if(Math.abs(i-cx)+Math.abs(j-cy)<=n/2) System.out.printf("*");
else System.out.printf(" ");
}
System.out.println();
}
}
}