#include <stdio.h> #include <math.h>

int main(){ int n; scanf("%d",&n);

int center_x=n/2;
int center_y=n/2;

for(int i=0;i<n;i++){
	
	for(int j=0;j<n;j++){
		
		if(fabs(i-center_x)+fabs(j-center_y)<=n/2){
			
			printf("*");
		}
		else{
			printf(" ");
		}			
	}
	printf("\n");
}	
return 0;

}