int main(){ int n,i,j;scanf("%d",&n);for(i=0; i<n; i++){ for(j=i+1-n; j<2*i+1; j++)printf((j>=0&&j<=2*i)?"*":" ");printf("\n");} for(i=n-2; i>=0; i--){ for(j=i+1-n; j<2*i+1; j++)printf((j>=0&&j<=2*i)?"*":" ");p...