/******************************************************************************
Online C Compiler.
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*******************************************************************************/
#include <stdio.h>
int main()
{
int n;
scanf("%d",&n);
for(int i=0; i<=(n*2)-1; i++){
int col=i>n?n*2-i:i;
int spaces=n-col;
for(int k=0; k<spaces; k++)
printf(" ");
for(int j=0; j<col; j++){
printf("* ");
}
printf("\n");
}
return 0;
}