#include <stdio.h>

int main(){
	unsigned i,j,n,m=1;
	int inkrement=1;

	scanf("%u", &n);

	for(i=0; i<2*n-1; i++){
		for(j=0; j<m; j++){
			printf("*");
		}
		printf("\n");
		if(m==n)
			inkrement=-1;
		m+=inkrement;
	}

	return 0;
}